On the topic of rules I do think they should be as loose as possible, but just tight enough that people will have to make some slight compromises. Maybe something like 600 engineering time(five years) so not every slider can be maxed and it still would make sense thematically.
I’m also unsure about the claim of bigger engine always being better due to the limitations of the spring stiffness in automation acting as a limit to how much downforce you can run and the extra weight it will add. I’ll make a quick test vehicle with a 7 or so liter V10 or v12 and post the results as a baseline, and then work on my actual entry after that.