Armour abilities is not really a huge problem in the game, it adds a new taste to it. But it does get irritating sometimes such as ppl using armor lock ALOT.
Instead of putting in armour abilities in loadouts for you to spawn with, you should place some of it thats useful in maps and players can fight for it like in MLG.
For sprint and evade you could still keep it to start off with but its true that the sprint double bash is most irritating esp when the person is wielding with a sword. Maybe delaying the melee attacks for a few secs after sprinting would make a less of a problem.
Besides theres always classic gamemodes.