Prism
Explorer
So you'll have a basic bonus of around +14 so hitting AC 15-16 on a roll of 2 95% of the time. At 9th level I'm seeing characters with +11 so AC 15 is getting hit 80% of the time. What I'm thinking is it's a lot of levels from 9th to 20th level and hitting AC 15 is almost automatic. The one saving grace is GWM and Sharpshooter are so tempting a player will always take them with the odds so good.
Hmm, against AC 15 I guess that's true. I haven't seen much with AC 15 though at these levels. We fought a ton of horned devils AC 18, a pit fiend AC 19 and an arch devil (custom - AC 21 I think). Looking at some of the other high level monsters anything up to AC 22 seems to be standard.