Because this is a young league that just went through a 9 team expansion, nearly doubling in size, in 7 years. There really aren't many of those people out there who don't already have jobs or serious baggage (like Rongen, Preki, and Mo). Look around this league, look at what has been successful for the last decade, and you'll find that taking a chance on new unproven coaches is pretty much how you do business in MLS most of the time. It's the same as I said upthread about players.
Top to bottom:
San Jose - Yallop; experienced MLS Cup winner but was coming off a bad spell at LA and Canada, was considered risky for a long time, took a while to come good again
Salt Lake - Kreis; totally inexperienced before his appointment without any time as an assistant, lots of experience in MLS as a player though
New York - Backe; highly experienced foreign coach, has done well but is still complained about vociferously by his own fans
Houston - Kinnear; no head coach experience before inheriting Yallop's cup winning San Jose side, lots of experience in MLS/NA as a player and assistant
Kansas City - Vermes; no head coach experience before moving down from Technical Director position to take over the team, lots of experience in MLS as a player
Seattle - Schmid; highly experienced MLS Cup winner with a deep resume in NA soccer, was a total coup for Seattle to lure him away from Columbus
DC United - Olsen; no head coach experience before his appointment with minimal time as an assistant, lots of experience in MLS as a player
Chicago - Klopas; minimal head coach experience in INDOOR soccer before moving down from the Technical Director, lots of experince in MLS/NA as a player
Vancouver - Rennie; no MLS head coach experience, a very good record as an upcoming young head coach in lower tier NA soccer
Los Angeles - Arena; highly experienced MLS Cup winner with a deep resume in NA soccer, was coming off a middling run in New York prior
Montreal - Marsch; no head coach experience before his appointment with minimal time as an assistant in US nat team set up, very experienced in MLS as a player
Columbus - Warzycha; no head coach experience before his appointment, extensive experience in MLS as a player and assistant
Chivas - Fraser; no head coach experience before his appointment but reasonable experience as an assistant, extensive experience in MLS as a player
Colorado - Pareja; no head coach experience before his appointment, extensive experience in MLS as a player and assistant
New England - Heaps; totally inexperienced before his appointment without any time as an assistant, very experienced in MLS as a player
Dallas - Hyndman; no professional head coach experience, extensive head coach experience in American collegiate soccer (similar to Arena and Schmid's prior to MLS)
Philly - Hackworth (interim); no professional head coach experience, some collegiate and youth head coach experience, minimal assistant coach experience in MLS
Portland - Wilkinson (interim); no MLS head coach experience, reasonable USL head coach and assistant coach experience
Toronto - Mariner; no MLS head coach experience, minimal foreign head coach experience, extensive experience in MLS as an assistant
Notice a trend here? We fit right in with what the rest of the league is doing. 9 out of 19 with no head coach experience prior to their hire. Only 4 out of 19 with previous MLS head coach experience.
Would Bob Bradley be nice? Sure, but he's got bigger ambitions (and doesn't have a reputation for pretty football either). Would luring a Kinnear, Arena, or Schmid be nice? Sure, but try convincing me that's possible. Yallop never would have got the time he was given in San Jose here. Maybe we could get Gary Smith back to North America... but the peanut gallery would surely proclaim him too backwards tactically.
Paul Mariner is exactly the sort of guy MLS teams are giving a chance to. There's no guarantees with any appointment - you could end up with a Martin Vasquez! - but he's been given the reins and is doing good enough already that, short of a complete implosion in our last 12 games, he should have an off season to build his team and get them playing the way he wants.
Recently fired head coaches include guys like De Los Cobos and Nowak who both had head coach experience. The only guys who were even moderately successful before being fired were Nowak, John Spencer, and Gary Smith. The lesson should be that, right now, MLS experience as a player, assistant, or head coach gives you a better chance at success than foreign head coach experience. Short of that, it's best to go with someone from the North American collegiate or professional pyramid. Hans Backe is literally the ONLY current example of going outside the North American pyramid for a head coach and having it work. Since there's not many available people with experience as successful MLS head coaches teams are forced to give someone new a chance. And the coaches who come in with grand pronouncements about playing "better" technical football like Vasquez, De Los Cobos, Pareja*, and Winter have the highest flameout rate and tend to make their teams worse.
But here's the real kicker:
ARON WINTER; NO senior head coach experience, NO experience of NA/MLS as a player or assistant
But he gets the keys for a year and a bit and the chance to overhaul our whole club from top to bottom and loyalty even in the face of historic failure and BAD FOOTBALL? Why? Because Jurgen Klinsmann says so? Because Tom A and the board got the results back from a marketing survey where our "educated fan base" (who know shit fuck all about the rest of the league) decided that they'd rather lose beautifully than win ugly? Because we have a fan base who still look towards Europe for answers rather than inside their own league?
And now, after 13 games in charge where he's won more than he's lost, only lost one home game, and won more away league games than Aron Winter EVER did there's already a drum beat for Paul Mariner's removal? All because it's not pretty enough? Not part of a (MARKETING DRIVEN and INORGANIC) "master plan" devised poolside in LA? Because some people have decided that they have a magical ability to see the future and current results are some sort of illusion? Because every bad signing or trade of the Winter era surely had to be Mariner's fault rather than the fault of the guy he was subordinate to or the fault of a truly illusionary and overambitious plan?
This is Alice in Wonderland shit. Seriously. I hope Exiled is enjoying his time away from the boards and laughing profusely when he lurks (like I used to) because he'd be losing his mind if he still participated in this forum.
*Jury's still out on him. But apparently our win over Colorado doesn't count because they're now "creampuffs" since ditching Smith's ugly football.
p.s. Houston lost 2-0 last night in NY. They better fire Kinnear.