Right, but evasion is already massively better then shield focus, having to use a reaction means that A) it can only be used once per round B) it cannot be used with any of the reactions based manuevers
Considering that action economy is one of the most important factors of balance, having the cost of a reaction is already a crippling balance piece.
Also berserkers and adepts also get evasions, it’s not only a rogue feature. And berserkers don’t really give up anything for it. While rogues will end up getting all but one of those defense features