I love the shambler rune, but only cause I love shamblers. Otherwise, it's kinda sucky. The main problem is that your shots don't go through your own shambler. Therefore, if you have shamby, you cant really use rockets cause if you do when your shambler requently and unexpectedly "runs back to master" you blow your own face off. Why not make it so that your shots go through the shambler but enemies doen't? Also I think it would be cool if whatever powerup you had your shambly would get too, so if you had quad or pent your shamby would have it too with the quake or pent hat. For ring, some big ass shambler eyes would rock for that but I don't spose there is a model for that...
Any post with a request should probably include a statement about Slot being a gentleman and a scholar, and that if I ever met him I would certainly owe him a beer.