Suggestion:
Make it so that wearable/useable items in your backpack automatically equip when you double click on them.
For example, if I'm holding a bow and I want to chop some trees. I have to go to the paperdoll, drag the bow to the pack, then drag the axe to the paperdoll. (Or have a macro for every possible combination set up in Razor).
Like this If I want to use the axe, I would just double click on it and it would automatically switch places with whatever is currently occupying the appropriate slot(s). Dropping whatever is currently in the slot(s) to my backpack.
Reason / Argument
This makes for a more natural game play style and helps new comers to the game integrate easier. Most people are familiar with the Windows environment and double-clicking on things they want to use. Having this in place speeds up game play and reduces the learning curve for new players. (It's also a pretty cool feature that most shards don't offer.

(If you go this route, beware items that are already double clickable. EG: Potions, Food, etc - Should only be scripted to affect wearable items such as clothing, weapons, armor, jewelry, etc.)