If you guys are taking this seriously, there ought to be criteria for what you request.

Anything that does not help out a person who owns just one account shouldn't be seriously sent in to Blizzard. Phrase your requests in ways that make them useful to single account holders. For example, I think keypress looting could be implemented to help out someone who temporarily lost use of their mouse. Allow hotkey corpse targetting and a loot key. You don't have to mention that you're requesting this because you have 26 accounts. It could help everyone.