I don't really aggree with the OP proposal and I don't always like multiplayers trophies but lets face it the majority of games without online trophies are so dead easy getting the platinum really isn't a test of skills ( there are some exceptions but not many).
It can be a pain for games with dead online community ( I still plated Quantuum of Solace 6 weeks ago though, there are still games out there).
One thing to realize is for a game to have an active online community it needs to be good and there needs to be incentive for players to keep playing again and again.
Leaderboards are a way to achieve this, trophies another.
And lets face it, I will dislike time consuming trophies for games I don't like too much but I actually enjoy them for games I enjoy, it gives me an excuse to play the game again and again..........( like Re5 definitly should have had some mercenaries related trophies !).
PS3-Xbox360 gap : 1.5 millions and going up in PS3 favor !
PS3-Wii gap : 20 millions and going down !
