I like complexity, so long as it is efficient, example being the entire Civilization series. So I am on the polar opposite to the comments made in the first post.
However, that being said, I understand and have the ability to empathize with my oppsites. So...
... I would put forth the idea of an extra game play option. "Quick play".
One click and your in a random dungeon with a random character.
After "x" number of times you successfully complete a dungeon things progressively start getting unlocked, and harder.
Ability to pick what character CLASS you start with.
Ability to pick specifically what character you start with.
Aplity to pick dungeon type (anti magic, anti physical, etc...)
This would provide a streamlined simple self contained play style very similar to the Alpha version, thus sating the desire for simplicity for anyone who wants it.
Stats and trophies could also be awarded because everyone likes to show off.