TwoSix
Everyone's literal second-favorite poster
Certainly nothing that would make level 12 as a must-take choice, which is my primary concern.not really much outside the feat, but here is the list;
barbarian: +1 rage use
druid: moon CR4 instead CR3 wildshape, wildshape duration
monk: +1 focus pt, +5 slow fall reduction
sorcerer: +1 sorcery pt
warlock: +1 invocation
wizard: +2 spell in spellbook
warlocks and moon druids are clear winners here
My gut feeling is that the most common choices will be 11/9, 11/5/4, 10/10 (if the level 10 feature is good, as it often is), or 11-12/bunch of dips.