Mechanics can be shit without being unbalanced.
Like runners. It's lame as fuck, but that doesn't necessarily make it unbalanced. What it is though is un-fun (imho ofc) and I'd like to see it replaced by something better.
Now, there is the obvious problem with archer melee; they will always and constantly backpeddle since they have no interest in pushing forward and melee you and as such you're forced to chase them. No archer in his right mind (from a purely game-winning perspective) will "stand and fight", regardless of melee capability (assuming his opponent isn't complete shit ofc, but then that goes for most situations).