Rework Idea: Khazix with the charge up ammunition systemon his ult/ shorter jumps

Whenever I play Khazix I feel as if his ult is the least impactful skill on his kit. It's weird because ults are supposed to be vey impactful as they can only be used from level6 and onward. The problem I have with Khazix is that his ult gives him a short burst of invisibility but it can only be used twice and the cooldown is quite long. Because it only has 2 charges I feel as if I have to use it to help engage or escape but the second charge feels sort of useless. Then I have to wait more than a minute to use it again. If there was more charges and the way it would charge is like akali, teemo, and corki, then I would feel as if the ult becomes a core part of his kit, more strategy and possibly more interactions during fights. I mean if there were more charges to use, then during fights, I can use my ult more than just an engage or escape. Combining this with smaller jumps(pantheon length jump* not ult) would change the way I would have to play khazix, not just jump in, kill, then run, but more like get close, dish dmg, try to use ult to kite, and fight, when fighting, my ult would make it harder for enemies to land skillshots and take less aa. Pink wards, 20 to 30 sec cooldown ult, and high resource costs would be the down sides. Maybe having movement speed could make the ability less useless when in true sight and as my q is mele, w is skillshot, and the e would have to changed to be shorter would make a more duely / bursty kit, for the enemy it's not hard to fight, cc, slows and constant kiting with good predections to where Khazix(or pink's) would go would create a very interesting fight for both players.

Do you guys think this could work for Khazix.