I really don't think the 210 deserves all this bad press, Mine is from the first batch and has performed really well week in week out ever since.
The few problems I've had have been sorted by Durango quickly and free of charge!
One was the gear diff, I sent this back direct to Durango and they upgraded the parts, rebuilt it for me and sent back a diff ready to fit into my car and even filled with the oil of my choice!!
The layshaft spacer also crushed on mine, but again a quick photo, emailed off to Adam and a new one arrived in the post the next day.
Infact the Durango staff are brilliant, I have had a few phone calls with them chatting about the car and set ups etc always willing to try and help no matter what
If your having problems, give them a call... you may be pleasantly surprised!
If I was able to offer any advice for the update model if and when it comes out my biggest recommendations would be to look at :
the wheels - these don't stay round for very long
The rear hub clearance - I have found these clog when running on grass and cause binding
Rear shock tower - this has proved to be too weak
In conclusion...
I don't think there are any more issues with the 210 than any other 2wd, its just a matter of learning the car and modifying it to suit yourself. It is a race car and I think it should be tinkered with to make improvements... that's how you get an edge over your rivals!