Since most 5.2 trinkets use the RPPM system, I just wrote a pretty thorough analysis of its mechanics and why they can feel extremly unreliable. Since I guess it's relevant to more than only warlocks, I'm just creating this post to give you a chance to look at it and give me your opinion.
I hope to see you there !
http://www.mmo-champion.com/threads/...gn-proposition