My perfect car:
1) Easy to work on......As in 2 piece center diff, no to many screws to remove front/rear diffs, etc
2) Losi style front knuckle setup
3) Losi style completely sealed gear boxes
4) 808 style bigger inner and outter clutch bearings and standard size bearnings throughout the car (8x16,etc).
5) Durability and virtual maintenance freeness of the Mugen.
Otherwise, either put a losi style front knuckle setup on a Mugen, or put the losi stylee front/rear gearboxes on the 808.