Midnight reworked the rage economy so i dont recommend macroing ironfur to anything for auto casts, that was mostly because of a talent that made ironfur do damage and cost near nothing so youd want to spam it off gcd as much as possible; both of those are gone.
It also made maul/raze a pretty important ability for both hero talents as the apex’s power comes heavily from its maul interaction. So if you dont need the ironfur for large melee hits (spell cast bosses or hybrid damage mobs, any amount of downtime) youre better off using rage on maul for the gore procs, absorb shield talents, or raw damage/threat. Nothing really requires more then 2 ironfur stacks at this point so extra rage should be going into maul/raze.
Swipe is and has for a long time been generally dead, better off filling with moonfires as EC, only realy useful if someone face pulls a whole second pack and thrash is on cooldown so you need a quick aoe threat grab.
Arcane build is fine, better for aoe then single target since it lacks priority damage to the point youll loose threat to co-tanks some time if you arent managing your mauls right, but is very tanky and has a lot of good self healing.
Druid of the claw doesnt really require shapeshifting too cat anymore, you can, it still has some talents for if you want too and the new persistence talent made it safer to do all everything wether catweaving for damage or throwing out off heals.
It had better single target damage, better maul/raze scalling and is still very tanky, slightly less self healing though.