Tanks are still taking STR accessories.

[Bikkusu]

I think there's diminishing return when stacking crit, my SMN used to have about 800 crits but rarely procs, about the same when my crits was about 550 - 600. Which is now I rather be stacking spell speed now on SMN which contributes to my actual dps rather than stacking a bunch of useless amount of crit.

There is no DR on critical hit rate, the rate changes as you level up.

In Dc universe online, crit was divided into two categories: Crit chance (critical hits occur more often) and Crit magnitude ( critical hits did more damage.)

I believe that crit in our game was changed such that everyone has a base crit rate and any additional crit from gear/abilities/melds will only raise the magnitude, not the chance.

This is wrong. Don't try to base it on different games.