There's atleast 3 tanks at tier 10 that need class changes and it would make them more comfortable to play.
Nemesis MBT
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Heavy -> Medium
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The Nemesis currently has like 360m of camo with a full crew (better than an AMX 50 B with camo btw) and also just doesn't really have a ton of armor. I think making it a medium so it can lean into camo more could help it a ton.
AAT60
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Tank Destroyer -> Medium
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This tank was incredibly strong as a 9 but now as a 10 and with the crew changes, it is incredibly uncomfortable to play with such awful moving dispersion. Leaning away from camo and towards being a brawler medium could help.
T114 BAT
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Tank Destroyer -> Light Tank
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This tank has always been really missing something and I think allowing it the ability to move with good camo could really help. Keep in mind that it will lose camo bonus as TDs gain more but a balance pass could always fix that in the future if needed. I don't think the gun would need changed at all.