No one takes this feat.
If a melee build has a spare feat, people prefer to take weapon focus in another weapon group, just for the added melee power, since +2 melee power is always better than +2 seeker.

The easy fix is to add +2 melee and ranged power to power critical, in addition to current effects (so it would be appealing to ranged builds, too).
It's not game breaking in any way, and removes the feeling you're taking an inappropriate feat.

It could be defined a quality of life change, plus it's quite easy to do.