Had one, trencher in the pow, issues included a. lugs too stiff (snowcross-based track), b. holes in the track, which we all discovered did nothing good for floatation, just eliminated weight. And durability.
10 years ago, doo had possibly the weakest mountain R&D in the industry, even tho they first came up with the segment 13 years earlier. Even if their guys in CO came up with something, Valcourt would know better and screw it up. Mountain riding was point, shoot, hope, and shovel, hence the RT1000 Summit. It didn't change much for the XP (have one of those, too). Too many eastern Canadian CAD engineers and flatlanders with paper ideas and little mountain experience. Somewhere between the XP and XM they got better. The 2.5 and then 3.0 inch tracks were big steps forward, so you would think they know the issues. Time will tell, but not until they get a good season on the snow by consumers. I do think the Gen4 is a fascinating sled, the motor may be a market game changer, 4S durability in a 2S.