Few toughts
Too steep reductions on Grots IMO, they would end up too efficient defensively and spamming them, particualry Stabbas would be best option. Especially as Grots have return mechanic with Loonshrine.
Goobapalooza is 2 wizards (granted non-hero, but that can have it's own utility), assorted buff pieces, and dudes to run on objectives (poor Brewgit) 140 seems to low.
Fanatics going to 110 sounds extreme, especially with conjunction with lower Grot points. Tough it's warscroll is in strange place right now
Sneaky Snufflers can add between 50%-100% dmg to Stabbas or Boingrot, I cannot see any reduction whatsoever as justifiable. What is your line of tought here?
Boingrot going to 90 just does not sit with me for some reason. I always see them performing decently, they charge is still good even with coherency changes. They mobility is wacky tough, but they can go into Squig sub-allegiance. So dunno.