How does everyone feel about skill speed?

[EasymodeX]

For every 24 hits a 2.5 GCD makes, a 2.4 GCD will make 25. It will take 60 seconds of uninterrupted fighting to guarantee that extra hit;

It takes 72 seconds at 2.5 GCDs per attack to guarantee 2 crits from 100 crit rating that matches the 1 extra attack from skill speed.