I don't know about the runtime. I too usually get tired and stop it before the battery is dead. But, I currently use a MA 5Ah 4s pack, and even that gets pretty toasty towards the end of the run. Pretty bad when a "100A" battery is pushed that far in a light setup geared for ~40mph. I really need to get a new 4s pack.
Other than that pin coming out, the CVDs are holding up fine, even with the RPM arms.
Even after all of the upgrades, the Slash still has a crappy, loud, and huge tranny, slipper design is horrible, suspension and link geometry suck, shock suck, need I go on?
All I have done to my SC10 for preventative measures is switch out the front A-arms to GT2 arms and added a chassis brace.
I couldn't be happier with my Slash. I bought it used, all stock except for alum arms. I added a Mamba Max, Velinion motor, and 3s let her rip!
I went to my property in the extremely rocky Texas hill country and was hucking it off our MX jumps. I took some 8 ft nose dives, cartwheels, 8 ft flat lands, etc. Only damage was a popped off shock cap. I would like to see an SC10 take the beating it took.