also, could we change the damage from the spider? at higher levels many foes are immune to poison, it is sad when spidy can't do anything. either allow changing animal type during leveling up or even long rests or let the spider have some kind of reliable offense. either allow posion damage to apply at lv6 the same way magic slash/pierce/bludgeon does when a creature is immune non magical slash/pierce/bludgeon or change spider damage to piercing
also why are there so very very few walls that spider climb works on?