So, you want more vehicle add ons.
The thing is, tires already can be changed on any car, and adding p2w weapons (based on the handheld weapons I’m guessing) to any car seems overkill.
Buying weapons that can be mounted to any vehicle with scrap also seems too much, and devalues the p2w handheld weapons (which would make some people angry).
Overall, these are unnecessary changes to the game that don’t really need to be added in my opinion, but, you can argue that they should be added.