As much as I disagree with many directions Diablo 3 took; I really enjoyed the idea of the adventure mode, as opposed to playing through the same linear story path with each character through multiple difficulties…
It would be nice to see this mode available where the story quest is essentially complete or not in play and expanding the bounty system or side quest system, modifying zone level ranges to be less linear and having access to additional town rift gates from the beginning… This would also help greatly with mod making.
I enjoyed the story and main quest, but I have no interest in playing through it again with a new character or on a harder difficulty.