No what needs to be looked at is the other aspects of USF and how to optimize this so that they don't need to solely crutch on the Jackson when facing anything above a medium. When this is done, you can obviously change the Jackson. I thought that was clear, but it seems not. As someone else mentioned, a price increase would be the safest option if the other aspects of USF remain the same. Performance nerfs will mean serious trouble for USF.
I can agree with you, but if you let me add a little detail. M36 are very good and useful TD, versatile to say the least, able to dominate the tank territory (unless they get outnumbered, of course).
If they were to be so good that risking some of the midgame is worth to get a jackson in time or that it is so useful it can turn tides in lategame because axis tank are bein pray instead of predator, then we have a usf metagame that centers about the jackson instead of a usf starving of AT tools.
Its perfectly fine for tides to turn, but the only and best tool to get that done is for the USF, the jacksons. There is a before and after a jackson field the game, not to mention when 2 of them are present.
In other words, USF is not lacking of AT tools, its that jacksons are so worth they force most of the sensible players to rush and get one ASAP. I've seen lots of complaints of USF players of the grenade and racks sidetech, only because they slow the jackson timing.
On the other side, As long as axis superheavys have to be countered by other tanks and TD (and not other game mechanics), jacksons are a necesary evil. But an evil unit aswell. Sadly there is no simple solution for this, there has been countless threads about jacksons. But this might get things right for once, i hope. Maybe if M36 can find itself a good spot between the other allied TD we can call it a day.
As i said earlier, USF mechanic is to have unit upgrades and lots of muni price tags, to enable them to adapt and punch hard at the same time. Most units are cost effective to allow high risk plays to be often executed and force trades that will mostly corner axis.