1) adjust LEGENG'DARY Stats according to the player level during drop, i.e. low level gets low level legend stats and vice versa, meaning legendary has no fix level requirement, it can be of same level to the character that discover it
2) i like the "Tower Defense" suggestion..i 2nd it strongly
3) More easter eggs level/items/cutscene
4) where's the character profile at battlenet page that blizzy say gonna put up, at least it can give those players to browse other player setup/achievements
5) more custom chat option, personal/private/clan/guild/country channel option
6) more "Aesthetic Features" like to those Dye/Wing in game
7) Bring back gamble function (after all its a gold sink mechanism what)
8) Remove those unpopular affixes and replace with new type or D2 like affixes
9) Bigger Pots, intro +stat pots, +resist pots, +speed pots & other similar buff from consumption
10) time to time special event with special rewards (limited time only, add to achievement)
11) remove neph valor <-- jangan marah aaa..my personal view
12) more refine search function in AH