I would applaud Wynne if he played. He served us well, had no say in leaving and was class while here.
Sturgis and Buddle will barely feature as foot-notes in the history of TFC. I have nothing against them to warrant booing or jeering, but nor would I feel compelled to applaud them. I was no fan of Labrocca and was happy to see him move on, but again I bear him no ill-will whatsoever. I had nothing against Labrocca the person, just didn't feel he was a huge benefit on the pitch. If any of them gave a passing nod to TFC supporters, I would happily applaud back, but I don't really see why they would as none became fan favourites or got much loving while here. If any acted badly towards us tomorrow, they'll get the normal treatment that such antics from any opposing player gets.
As for Silva's treatment, I hadn't heard anyone booing him at the start and certainly agree that there would have been no justification for that treatment. However, when he started constantly whining to the ref and persistently cheating, he got the full impact from everyone around me. That was because of his behaviour, not because of past history, and in my opinion was fully justified.