No disrespect WC, cuz I've loved following your thread and I think what you started with for a Rev, versus what you have is an amazing difference, however.....if I had no legs and was strapped to the seat of your sled, I could still flop it over. The front suspension, the rear suspension, the track, 2-wheel kit, side panels cutout, the skis, I never had any of that on my 06-07 Rev's and I NEVER had a problem in any type of snow getting these sleds to do what I wanted. Now please do not take this the wrong way....
There comes a time when you have to stop looking to the sled for answers, and just get out there and make yourself a better rider.
Honestly, what is going to happen when you upgrade? Experience cures all of these issues you are addressing with your mods(and many other people and their mods.) You'll notice the most experienced(and therefore best) riders can jump on pretty much any sled, regardless of modifications, and ride it to the sleds potential. I think, we over-think this aspect way too much, trying to find shortcuts for everything. Like most things in life, experience is what pays dividends, so get out there and get some snow under those skis instead of worrying about what ski to mount on what side, and where to cut your ski off.
If I had your sled, I would think it was a jet-ski just on how you have it now. My '06 had Simmons Gen 1 skis on it, stock ski width, swaybar removed, and I cannot say I ever had any issues you seem to struggle with. Experience, I just can't stress that enough I guess.