I'd argue to just keep the Jackson as is then for these changes to go through. Do note I'm advocating for one v ones not team games as that's not my interest (aside from twos every once in awhile). The Jackson should only be slightly increased in price and hp to prevent one shots and two shots but still be three shotted by enemy AT guns.
The Jackson is USF answer to Axis heavy armor and it does that job well. It has good penetration, long range, and it has a turret which people seem to underestimate the significance of. USF has other tools to deal with Axis medium tanks and below with the 57mm, bazooka's, Shermans, etc. Tell me what weaknesses of the Jackson would remain aside from having no armor? It has 60 range, is mobile, and hard to flank without taking return fire as other Tank destroyers are unable to which is huge. If I allow my Jackson to get chased and destroyed it's because I misplayed from either lack of supporting it, not scouting, or some other reason where I did something wrong.
Why I reached ranked 1 with USF is because I used the Jackson to it's strength as a mobile, long range but fragile turreted tank destroyer. I don't get why people are complaining about the Jackson when they play like a slugger when it's not! If the Jackson gets that HP buff even with the cost increase it will be overpowered in one v ones. I mean this is coming from a player who loves USF to death.
God Dave has SPOKEN!