I do think some abilities that counter crit should exist, but the frequency with which they are being released is very worrying. If it keeps up like this, there will be so many counters to critical strikes that characters who rely on crits will disappear entirely from arena.
I'm also worried that the dev's usual of dealing with problematic mechanics is going to lead to crit teams becoming unstoppable thanks to one or two characters. I would not be surprised at all if a character had some sort of ability which made crits ignore anti-crit mechanics.
