Succor - Impossible to get full potential?

[Seryl199]

Eos provides a 700 potency HoT that can be buffed with rouse and fey illumination for massive effect, putting her far beyond the 150 potency heal and shield of succor. While it's great that succor performs well in the endgame, in most content I find it on par with cure III. Strong, but not useful. It disappoints me that such a costly spell often loses half of its effect.

[Squa]

Eos provides a 700 potency HoT that can be buffed with rouse and fey illumination for massive effect, putting her far beyond the 150 potency heal and shield of succor.

true, but it has a 1 minute cooldown, and regen effects is over 21 seconds which in my view are limitations.