Heroes like BP and Conq, that have variable timed bashes, can keep you permanently out of stamina with their bashes. It really ruins the experience of the game just having to wait and make 50 different guesses in order to get your stamina back. It's honestly so unfun fighting one of these bash heroes that just keep you out of stamina.
Even when you do have stamina, you can't throw out any attacks because they're bound to dodge bash it, and then guess what, you're stamina is paused and you have to wait for it to unpause before you can regen and start attacking again. It's a terrible system that really needs to be looked at.