There's probably a reason most stuns don't deal very much damage, and you have to combo other abilities into them in order to deal the damage? Hamstring also requires you to be within melee range of your target.
Either way, you're completely distracting from his original point of balancing the play in between the engineer and the Al'Akir HWL, obviously there are a lot of abilities in vanilla that have very little risk when there's a grand total of 5 interrupts in the game and a pretty limited amount of cooldowns to play with. So using base abilities is generally very rewarding, which is probably one of the main reasons people still bother to pvp in this archaic version of the game. However, adding a slight risk every 5 minutes to a few of these abilities doesn't really break the game.
Certain non-blizzlike things are already found and accepted as an improvement on Kronos, why couldn't this be one of them as well? Why are you so much against it?