@Zenith
Generally, if you roll a 20 on the attack roll, it's a critical and automatic hit. There's no additional roll. So anyone attacking your wild-shaped form would need to roll a single 20 to crit, but they'd have also have crit your high-AC humanoid with that roll.
In your specific recent example, Exposing Bite does cause the next attack to be a critical hit. Idk exactly how that works, I suppose it only deals a critical hit if you actually make a successful attack roll??Although it may "store" the debuff until a successful attack is made...?
I definitely agree the forms need work, but I don't think they need an AC buff or anything. Increasing the damage Moon Druid forms do + allowing you to move concentration spells like Flaming Sphere should be sufficient. I want a risk (lower AC) vs reward (higher damage, more effects like Trip or Web) decision process when choosing to Wild Shape. It shouldn't always be better to Wild Shape, but it also shouldn't always be better to stay as a humanoid.
Oh, and of course, it's necessary to remove the double instancing of damage (hit + splash) from AoE flasks/arrows which make it so easy to lose concentration.
Land Druid forms should generally be useful only outside of combat: scouting, sneaking, flying, etc.
