All that Telemetry is great, but the stuff you really need to be able to set up your car, is the stuff you can change in the settings, thus data showing springs, roll bars, wheel spin and ride height behavior to name a few.
And, as I have said in forums before. That stuff should be IN GAME If you you really want the F1 experience being simulated. (Inter action with engineer giving feedback and ideas)
Just guessing, and changing setups without feedback has nothing to do with realism.
And I am sure, real Sim enthusiasts will remember Microproses Grand Prix series from around 2000... (as pj bot put it) where the Telemetry in game was invaluable for a good setup without getting stuck on a setting that works everywhere (again, that is not realism)
To each their own of course. Even though this game is by far one of the best. Without that it shouldn't be allowed to be compared to a simulator... it is great there are settings and options for all levels of players. But none are for the Sim fanatic if you leave out Telemetry data and are willing to show it. My question simply remains... how much are you really simulating ...