Replacing resis-aug booster mods with recharge booster mods would help a little. The multiplicative power of resistances threw TTK out of orbit. Frontier tried to counter this effect by changing plasma into pure, which kinda helped, but eliminated the advantage of running plasma in PvE (because NPC health isn't based on resistances as much) and strongly confined the PvP meta to its use. The intro of recharge boosters would help reestablish the utility of hull tank hybrids where resistances were lost.
HRP resistance modding also added to this effect. Removing the resistance bonuses and boosting base hulls of ships would help alleviate the massive massive massive disparity between someone who has HRPs and someone who doesn't. A big disparity is good, but one that's more than a magnitude is not. You either don't have enough ammo to kill them with frags, or you kill them with a single volley. Not very smart...
If those two things are done, it would warrant a damage boost for plasma, bringing its viability back up after what would have been lost from removed resistances. This would increase its potential in PvE.
Lastly, tacking on higher power consumption penalties for reinforced boosters would introduce the dynamic of choosing between running safe, and running higher offensive pressure. A good balance offers alternative choices that are not overpowered. Without these penalties, you simply run the highest shields possible, the fastest engines possible, and the highest damage possible. I think this stinks. A power penalty per % boost gained would allow for passives to tank against ganks, and would reduce the hitpoint inflation with offensive builds.
The game needs a lot of balancing but, I came to the conclusion a long time ago that those who decided against it simply don't care. They don't have the slightest clue about what makes for fun PvP and PvE combat. They don't even play the game. This topic of health point inflation has been done several hundred times now, yet they just keep ignoring it because some non-factors (who don't even play anymore because they got bored to death) didn't like the idea of losing their ultimate build.