That'd be cool! Maybe it could be like a little convenient store or mechanic shop that you drive into and buy parts for repair. I'm not sure about swapping weapons, but maybe you could buy ammo.
I get it that you are being bombarded with suggestions so I humbly submit these.
No worries, I always appreciate more ideas!
final note I'm a syfy model scratch builder. do you have an Insta or deviant art or something where you've posted some art work of the mech , I'd like to build one in 1/35 scale ( a common model tank scale ) .
Sorry, I don't an Instagram or DA page, but I do have a Twitter which you could message me at (@sysmainframe). I'll definitely have more views and ways to see the mech in the game, I plan on showing off the design a lot more.