No thanks. I've done that in almost every previous MMO I've played and I don't want to again organize my real life around a specific time on the specific day in the week, run from work to home just so I could raid. If other people want that sort of commitment that's fine. I however do not.

I would not mind a few instanced dungeons of 'proper endgame' to have this timer, but leaving that idea till 2.0 and am definitely against longer timers on all instanced content.