Ok I'm sorry, I didn't phrase it correctly. Let me explain, what I'm concerned about is actually kind of shallow. I'm concerned not by the vanguards effectiveness (the fact that you say he requires more attention actually makes me like him more) or the fact that he uses a rifle. No its that it sounds like I'm going to be constantly shooting people at point blank range, and how that feels and looks. At some point around lvl 35, am I going to go "Why didn't they just give this man a club and some grenades and be done with it?" I get visions of Skyrim archers beating people to death with their bows. Its satisfying, yeah, but around mob number 12 you start to feel kind of dirty and awkward.
I'm not saying the vanguard wouldn't be a good tank, or that its mechanic is weird, or even that I want BW to change it. I'm just wondering if that during his job as tank, this rifle man looks, feels and acts like someone wielding a rifle. That the game remembers that lasers come out of the narrow end.