Heat rises and icarus dash can be merged (not needed but seems pointless without the dash).
Add a 4th fragment:
Healing tome (or something):
Whenever a healing grenade is used it gives an increased grenade regen.
There are two ways for this regen to work:
1. When healing yourself the grenade regen is faster, healing allies increased grenade regen (at max like grenadier + pre Nerf healing nade regen)
2. Give a chunk of grenade energy on each heal on yourself and on allies heal. Like 25%/people healed yourself included.
(Accidentally had 2xfirepower from stasis on and it felt better as a safety net when got overrun by an unstoppable).
Each heal could give 1% super energy (0% in pvp), honestly just make the First part and ignore this sentence.