Basically it would be advantageous to be able to have a way to attack at melee range with the ranged characters. A threshold with a slider would be most preferable, but that's probably asking too much. As frost TB with whatever his aura is, it's annoying that you'll stop and wait for them to max range to persue where with a fast character, he might lag out of range of your slow and take off. So being able to alt right click for persuing would be nice, where your DG just attacks and closes in on the target either at melee range or with a % based slider (TB i'd want around 50% max but Reg i'd take closer, for instance).
Probably been suggested before.. meh. It would be nice.