How about chassis upgrades? These would be things such drag and weight reduction, weight distribution, front and rear specific downforce, floor upgrades etc. This would make the design battle more exciting. And how about choosing aero concepts (high/low rake, nose cone style etc.). Also if you had regulation changes that the hosts mandate, that would be cool
I like that and chassis as well. This would help pinpoint development and help build the best car
The issue is that the cost would be more so that may need tweaking
No, but kind of yes. ;-) All those things are the tweaks that are simplified into the car stats we put our DPs in. So adding those things on top wouldn't make that much sense. But adding a more hardcore mode replacing the whole design and setup with a much more detailed one, oh yes, I'd like that.
But for a (deceivingly) simple, mobile friendly, easy to grasp the basics system the current design does a great job and should remain for all those preferring a game that's not looking like requiring a background in race car engineering to figure out heads and tails.
