Frank
While I'd love to get to those details I have to admit that this level of depth is too much for the general game, even for Elite. One day in a special mode maybe, but it'll require a lot of work because without the sim making use of the settings they'd be worthless and without a much more fleshed out practice sessions and feedback like how the tyre wears and temperatures of flanks and center, if the car tends to over- or understeer and so on we'd be quite lost setting up those things.
Camber angle can be modelled quite simply, you just have a simple trade off between increased handling and increased wear. So the angle you set would basically be with the aim to use up all your tyre life by the end of the stint you want to run.
Toe could be a simple as a trade off between your car's Handling and Downforce characteristics.
Tyre pressure again isn't that hard, it's basically how well you heat up tyres at its most basic so would allow you to tweak the operating range of certain push levels of different tyres.
That being said I'd recommend these things as elite tier only and also make then an optional advanced section as part of league rules. Then people can decide what to do.