Zardnaar
Legend
As a DM, I'd probably say that beskar impaired the use of the Force, just to avoid powergamers using it for their Force-wielding characters.
In d20 all it did was allow damage reduction to apply to lightsabers. So you basically needed to be an elite trooper to have damage reduction or put it on vehicles.
In legends they did build beskar Star Vipers iirc.
Paz Vizla Soldier 7/Elite Trooper 10,). Probably no higher than lvl 12 tbh but whatever.