Assault Sustain

Sounds a little strong compared to other classes that have some sort of healing it has more restricted triggers to them.
Banner has a long cooldown and only gives players Contested Health so it's still up to each player to make sure them do enough damage / execution to take advantage of it.
Vanguard require Executions of Majoris or higher. Gun Strikes or any other kill doesn't count towards this one.
And then there's the perk that gives HP to any team mate if they execute a Extremis or Terminus.

If Assault could get HP back simply from a Ground Pound in combination with the perk that restores Jump Pack's Charge by 10% on a kill.
The Assault could "farm" health as long as they got Jump Charges by simply ground pounding Minoris. Which currently can add up to multiple "refills" for even more chain ground pounds.
No other class would such a strong easy-to-get healing. Literally whenever you jump you can heal.

An assault could basically stay top-healed clearing out the minoris from any encounter and then go duel the Majoris that as left, if any are left thanks to the multitude of Ground Pounds.

If you put a timer on how often it can trigger, like 10 seconds or so it would make more sense.
And/Or a limit to how much % of HP the assault can get from a Ground Pund.

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Initially though you wanted to tie it to a Hammer skill, but if its tied to ground pound - what about the new Jump Pack Dash build?
Some form of healing would be very welcome, but g2 think how to add it elegantly.
I would prefer if Assault was rewarded for going after Majoris and Extremis enemies, tbh.