I'd like damper shafts that have a hex key on one end - zero chance of damaging the shiny parts.
RETAINERS OF SOME SORT FOR THE DRIVESHAFT COUPLING PINS!! Biggest cause of running issues since I've had the X4.
Also, less black-on-black parts, Contrasting colours for adjacent parts would make assembly, tuning and maintenance so much easier. I'm just one of those people that aren't obsessed with cosmetics when I'm wheeling on the drivers' stand.
Regardless, my X4 has been very good and I've had some fun racing with it
