Nothing new on Meteors passive. We still have an idea of what we want it to be but we are not close to implementing it.
No eta on Sunny’s adaptations. No planned Sunny nerfs at the moment, though we know she is strong.
Grounder dot is low for two reasons. The damage should not compete with the venomous claws line up and the debuff is strong enough by itself that the perk doesn’t need a large amount of extra dot damage on top of it to be a strong pick.
The claws perks are still powerful in their current state and likely are still too strong when both are taken. It’s likely they will get nerfed again due to the problematic unavoidable damage build going on right now.