Your comments

This one will be too similar to spartan's and barbarian's hats that are already in game now. Maldar's one looks better and more unique.

I think sledgehammer is one of the worst weapons in the game now. At least with a directional shield it lets to jump behind the back and do some damage successfully. So yeah, there's something to do with it.

That's how shield works in real life, no? You can't block attacks coming from the back when you facing the other way. Probably the best things in game now that had to be implemeted long time ago.

Few good players prefered BOW even when there were no 180 degree block thing ;) Concerning the topic, strategy you described is pretty common. I think you barely have a chance to collect 50+ bones with it even when you fight only melee opponents. And if you achieve so great results I don't understand your point to come here and ask "is something wrong with the game?". Why not to take it as it is? You've found the strategy that lets you win some opponents so why not enjoy your skills and kick some asses in public game or arena then? :)