Basebuilders need large capacity, restore their inventory size.
They are already massive and make a big target for other players so theres already a compromise if people were to choose to wear them. Their size should reflect storage space.
Perhaps just increase the weight of them as well if you need a way to punish players for having storage space.
You can also reduce vision when looking over shoulder as well, if need be.
Dont neglect base builders. Its currently very difficult with inventory nerfs.