With adding new system of carrying shields, it will be great to add shield durability indicator to the game.
Before last update, when shieldmans were able use 2 shields, durability wasn`t big problem. But now, if shieldman lose his shield he will be probably dead in few moments.
For example, something like this: http://prntscr.com/q38qnb
Also, it would be realy cool to add some new textures to shilds of different durability, but it seems to me like something fantastic =)