Instakills feel necessary in the current framework of Disco where people will just pile tons of shit on you. SNAC, Razors, Dual MR, Snub Mortaring.... they're all mechanics that, for better or worse, are necessary when people throw fodder at you and you need to make use of your skill advantage to efficiently thin their numbers. WIth the reduced spawn timer, I think instakills are also a lot less problematic (it was bad being cheesed out of the game for 2 or 4 hours, at least it's only 1 now). I feel like there should be a rule, however: he who can be insta'd, should be able to be insta'd themselves.
Really though, the one good thing balance magic could be used for is making it so that caps and snubs can't touch each other {: