I saw a post in the challenges section about guild renown, and thought it might bear mentioning here.
On Epic Quests/Raids:
Instead of giving us XP, (Or not!).
Give a guild renown bonus for completing Epics!
Here's some numbers I came up with off the top of my head:
Epic Quest Completion (ONE TIME BONUS PER ONLY) = 2500 Guild Renown.
Epic Raid Completion (ONE TIME BONUS ONLY) = 5000 Guild Renown.
Each additional completion of an Epic Quest or raid could give:
(Last Reward / 2) Guild Renown..
So an epic quest: 2500 renown at first completion
1250 at second
625 at third
312 at fourth
156 at fifth
and maybe 100 each successive completion.
(Or some other diminishing rewards pattern TBD)