I guess they like the sacrifice aspect of it but it's the only healer to be actively punished for using their emergency button.

It's kind of like when DRK was the only punished for using their invulnerablity.

I always thought back in SB (when Selena was different and unique) instead of locking you out, it would summon the other fairy while the other is on CD and swap back out if with oGCD if you want Eos back in when the CD ends.

That way you could have easily had a fairy out to use Whispering Dawn/Embrace/Fey Blessing/Union/Summon Seraph. But still "punish" you by not having access to the other for a CD.

But seeing as Selene and Eos are the same these days.....they might as well just add replace it with something else.