let's start by stating the new system works best for statics. However for pugs is a little bit a mix bag, you could win all or nothing for weeks.
But we all will agree that one of the good things regarding the new loots is that loots are used by all, you won't get maiming stuff where there is no dragon in the party or similar stuff.
but it is not perfect nor "solid good" yet. so I suggest the following:
1- you CAN NOT roll "need" on a piece that you already have for your current job, for example I have the Edengrace earnings of fending fro my tank, then I can ONLY greed on "Edengrace earnings coffer".
2- if a player doesn't win a coffer for an instance, they get double the books for that instance, even if SE increases the books = piece ratio a bit. for example you'll need 6 books (instead of 4) to get an accessory, which will be 3 weeks (instead of 4) in case you won nothing.
this way seems more reasonable for both statics and pugs.