It's only .5-3 hours FOR YOU, not for everyone. I like what you're trying to do, but like they've already said this won't accomplish more group play and could potentially be something that powergamers abuse. Giving a slight skill learning bonus is NOT going to be enough to persuade those soloists who LOVE their list of 100%s in their skills/spells/supps list to start grouping. They will still need more time to perfect skills and will still go off on their own to be all "no time to gorpu now, busy honing skillz bra. Gotta get swol bra."