Doesn't standing in melee range prevent mana regeneration? It wouldn't be something I'd do for a prolonged period of time if that's the case. Mid range is the sweet spot for me. As a healer, I absolutely hate when casters are 5 miles away for no reason when I need to aoe heal so I like the idea of standing mid range. That's where I try to be when I play RDM for the most part.