What's everyone's opinion on how Tank Destroyers could work in HLL?

[weary python]

Had an idea for the potential adding of Tank Destroyers into HLL. I feel like if they are introduced, some good ones would be the M18 Hellcat (US), Achilles (UK), Jagdpanzer IV (Germany), & SU 85 (Soviets). The way I was thinking they would work is the turreted Tank Destroyers (Hellcat & Achilles) would get the armor and mobility of a light, with the firepower of a heavy, while the turretless ones (Jagdpanzer & SU 85) get the armor and mobility of a medium with the firepower of a heavy. In both cases, you wouldn't be able to go toe to toe with Heavies due to your armor and would have to rely on ambush tactics to get your kills. That, or there could be new damage models, like say the turretless ones get frontal Heavy Armor, but sides/rear are that of a medium and turreted ones get frontal medium and sides/rear of a light. This isn't something I'm absolutely clamoring for, just something I thought would be cool. I'd like to hear other people's opinions on this topic, thanks.

[cold hull]

For Germany a Stug III or Stug IV would be cool.

[rain temple]

Fast light vehicle with heavy grade cannon (like Hellcat) would be way too OP.

Hellcat and Achilles should probably have medium cannon and light armor, but having the speed of a light tank.

Turretless are pretty much the same, except maybe reduced time to reload by 1-2 secs

The only problem is that Su85 and Jagdpanzer are obviously more protected, so they should have medium armor, but that'll eliminate balance between vehicles.

OR tank destroyers can get heavy grade cannon, but with lesser damage (alike AT guns)

[crystal stratus]

Archer might be another option for British TD if you want a case mate TD. Also the turret TDs did have the disadvantage of being open topped and having paper thin armor, whereas German and Soviet designs could be expected to stop maybe even a medium tank from the front depending on the variant.

[tribal swallow]

Nah ,we need a hetzer