Green Lotus and
Blue Betty can be removed for more group utility (use [Essence of Spell Power] potions to keep the buffs).
Deep Fissure is the perfect animal companion skill to proc
Savage Beast on cooldown, but it can be replaced by another animal companion skill, or any other skill by replacing the ultimate with
Feral Guardian to keep
Flourish passive active.
Enchanted Growth can be replaced with
Winter's Revenge when using the class mastery
Tundra's Maw.