i like the idea of potion and hammer transmutation... I was talking to a friend and we seemed to agree that combining 25 master repair hammers to make a golden repair hammer would be nice... but not a likely possibility what with them only available in the diamond shop. The potion idea is nice, as I hate having all these type A potions, and rarely use them because there's better.
Auto attack for casters I've never had too much of a problem with, as the auto swinging is only a split second if you happen to pause between casting, which you shouldn't do if you're doing it properly. Though I did have an issue with using wands as blunt melee instruments... really, those should be casting ranged magic bolts like a bow or xbow.
As for tempest heights, if someone is being a treasure chest hog, and not doing their part, I simply stand back and let them get killed.