I have Crit/Det/Acc on my Last Resort. For Novus melds I did 36 Crit, 24 Det, 15 Acc, as this gives you 8 bonus stat points on Last Resort, which is the best you can do without going Full Crit and Full Det.

The extra Acc is very useful IMO. Less chance to miss with the few GCDs you spend DPSing is great.