I wasn't a fan when I first saw it either, as evidenced by my post on page two. But it is a kit you can work with. I got a really good deal on a Aftershock with the Losi kit with Losi single speed and MMM2200 combo. Driving it is like driving a cc2650kv powered rustler on 4s, yea it's that bad. But it's not hard to cut the upper deck off the battery tray (leave the upper slots for the straps) and mount it up front. Switching to a erevo rx box saves some space and a piece of plexi with a TRX MMM mount takes care of the esc out back. Truck drives like it should now, still wheelies but alot more controllable. Gearing is prettt much limited to 25/63, can't go smaller on the pinion or spur. But this works well with my current 1520 1600kv on 5s combo.
I don't know if you necessarily need the full LST2 conversion. I do know with the 1515 every run I was either spinning the 14mm hex in the rim or spinning the pin inside the hex! I had another MMM and the 1520 so the 2200 combo was sold to fund the LST2 conversion. Can't complain as I have about $75 into the roller at this point. When I eventually make it into an XXL with center diff, I'll assemble all the leftovers (basically an aftershock) and see how it holds up, with 17mm hexes and rims this time though.