One I want and have also seen echoed everyone on reddit and these forums is an overhaul of itemization.
Trimming of the fat (tons of useless stats).
More affixes per piece.
Way more uniques.
Fixes to uniques and aspects making them affect more than just one single names skill (makes it less restrictive.)
Remove weapon restrictions.
Add stat requirements to balance weapons.
Good luck though with getting them to address real issues. They just cherry pick one easy problem to address and then answer google-able questions the rest of the stream.