Just my thoughts so don't shoot me down.
You like the sway bar in, leave it in.
You don't want to wheelie over backwards, leave the limiter strap in the middle hole.
Now, move the rear scissor and all its parts to the front hole (about 3" forward). You will be moving the upper mount, front mount and rear bottom mount as well as the rubber bump stop on the rail. This allows the weight transfer to happen without the front end coming up uncontrollably. You can adjust how much you like the front end to come up by moving your weight forward or backwards on the running boards.
My opinion is, that having the limiter strap set to the bottom hole, the front of the skid is forced down under hard acceleration as the track pulls the skid forward (like a winch winding the track forward over the drivers). When the front of the skid nose dives, it increases the approach angle and doesn't let the sled climb up on the snow as well as if the angle was shallower. Even better would be to move the limiter strap to the top hole which holds the approach angle flatter over more conditions, but with the trade off of less suspension travel. Again, my opinion is that with this ability of the machine to transfer the weight back with less approach angle loss, it still lifts the front of the sled up allowing the rider to roll it onto its side easy enough that the additional resistance of the sway bar is not noticed as much. Another theory that I believe, is the additional spring pressure of the sway bar (being that the suspension is tied together), when sidehilling, it helps to hold the front end up out of the snow a bit more for less drag, and the rider gets more steering response from the ski that is in the snow.