This idea, while I'm sure not new, but born from a conversation about setting up a /loot hotkey with someone just now... If theres another post elsewhere, then sorry bout that... But if it is, then this is a "bump".
While /loot just opens up the loot window, you still have to manually click the Take All button to get the items.
How about maybe a /lootall option, that would execute the Take All button automatically. The loot window wouldn't even need to popup, just take all items off the mob, if any are available. The messages would still appear in Main chat, and we would know that way if any loot was found off last mob.
I suppose this could be dangerous. If a player has a hotkey setup for this (soloing), great care would need to be taken to not use this hotkey (out of habit) while in a group. Epic mob bosses, etc, that'd be bad to use it in that case. But for soloing, this would be nice.
Perhaps a simple If... Then... statement might work. If player in Group Then Show a popup "Are you sure? Yes/No" Else go ahead and loot all End If... I dunno, something like that maybe, just tossing out another idea.