I dont believe ove seen it mentioned, but onslaught also used to have a 10x enmity multiplier that vanished. I actually used it quite a bit during defiance unchained mid fight as it is better to use gauge on onslaught under unchained to prevent capping to avoid using IB until deliverance was back, and occasionally to secure aggro (My ot this tier was abysmally bad at managing aggro so I often needed to get some as cheap as possible).
So when were looking at onslaught now, it became a bigger gauge sync as chaos increased the potency value of gauge via chaos and fc increasing chaos recast (the almost break even of old onslaught is now more in the red), and it lost some of its value in 10x enmity. It costs the same, is a larger dps loss, and has no additional effect, and doesnt even have the defiance unchained niche. But this greater dps loss can be used more often!
It's just a bad skill now. The only reason I'm not that annoyed is because we have arms length to soften our need for mobility so it really wont matter very much.
Any changes are purely QoL, but I would like to see a skill like this have some boost. The old enmity boost was enough to give it a niche. Now it's going to be a game of "how can i get through this fight without needing to dash". Maybe I'll have plds use that cover thing they are all whining about
Honestly i'm not sure what to do about it though. The EZGG version would be copypasta the other 3, but that would just mean you spam both charges under IR, and 1 in between. Thats not really a mobility skill, just an OGCD damage thing. But if its going to cost gauge, it should be worth spending gauge on. It managed the fine line of being 'almost' break even so it could be justified to use as mobility to become a gain when needed, and a great way to grab some quick threat without severe punishment. Perhaps the simplest solution would be to slightly up the potency so it falls back into that niche with the value of gauge increasing, it needs to scale with it, even moreso as it lost any other non-mobility function. This of course doesnt address the OP's out of combat concern, but I never really saw the need for out of combat dash. It just delays your opener and risks someone else ganking threat with their 1st gcd vs your piddly charge. Tomahawk always serves the inital grab far better anyway imo and using it mid-fight to manuever/get to adds/etc is still there as is dungeon boss pulls.