The real main issue with Nova bomb is its ability to be destroyed very easily, it is the only super in the game that can be destroyed before you even fire it off or it being shot out the air by an enemy projectile. It needs more than just some damage buffs, it needs QOL as well. Nova bomb will continue to be a trash PVE super compared to others as long as a mechanics like this persist. No other Super has so many QOL problems, its ridiculous. It's already an incredibly annoying to use super, in PVE and we aren't even talking about the mediocre damage numbers or add clear. You have to worry about so many things, whiffing in smaller spaces or clipping on some unforeseen corner geometry thanks to the jump, killing yourself and of course as mentioned above the biggest issue, it getting destroyed often and easily by mobs just aiming in your general direction.