Nothing bad yet... too new. It's based on the LST2, just stretched a bit. You may have issues with the chassis rails snapping on you. I had that problem with the LST2 rails and LST1 rails on my aftershock. Since they are extending it in the front (where mine broke 4 or 5 times), I could see it being more prone to breaking there.
Also, they changed the gear ratio in the trans (or the diffs... can't recall), so it may require a reeeeaaaaaaaalllllllllyyyyyyyy good clutch! Considering it's size and weight, if they went with taller gearing, it's going to be hell for the clutch shoes.
Other than that, it's at least as good as the LST2. Which is a really good rig.