1. I am just starting looking at Shock Dynamics right now. There will be something regarding shocks in the near term.
Regarding diff types and oils. This is a verrrrrry complex subject and would required detailed tire models and lots of research. Certainly will not happen soon and currently is not even on the horizon.
2. I'm doing some track testing right now using an Eagletree V4 Datalogger and GSensor. Very early stages right now but max lateral G I've seen so far is 2.2g. I'm sure more is possible. Acceleration with a 21.5 motor .7g braking 1.2g, lots more possible here too. You have to use some judgement as you will not get max lateral combined simultaneously with max accel or braking.
3. The push/loose bar graphs are indicators showing which direction you are moving the cat balance based on weight transfer. It takes into account roll stiffnesses, CG position and Static Roll centre. It does not consider tires or racing surface.
4. Again toe-in/toe-out effects are tire dependent. If you want to record you settings enter them on the Gearing/Notes tab in the setup page.
To include tire effects would require testing for every tire compound at different loads, slip angles, camber angles and for every racing surface. Professional race teams like F1, IndyCar, ALMS have access to that data. I'm pretty sure we never will
Weight transfer and camber are key to a car that handles well. Focus on determining a front to rear car balance that suits your driving style and camber settings that maximize tire contact patch.