>>64006633
You don't really need neurohelmets for tanks. It just links the pilot to the balancing system.
>Fusion tech
... Fusion tonks are Star League stuff. They got cannibalized for their engines during the Succession Wars but they're all over the place in the current timeline. Those haven't been rare in a really long time.
>stealth tech
Took two years in-universe to be applied to vees after its invention.
>AI
AI pilots canonically suck horribly. The Cappies tried it but their network went rogue and was only questionably usable to start. WoB uses drone mechs as chaff and terror weapons. Obviously this is mostly a setting conceit but it's a tabletop game about dudes in stompy mechs.

>>64006671
Battletech vehicles have the same armor as mechs do.