Lippert 6 point LevelUp System and cold weather storage

The manufacturer is the expert. You called and they told you the answer. You don't like it so you are fishing for another option?

I understand that winterizing is a PITA and I'm lucky that I can put the trailer in the back yard and not worry about it, but ignoring what Lipert told you is at your own risk. If it fails next Summer and they deny warranty, you brought it on yourself.

I would block up the frame with cribbing or concrete blocks (like a mobile home) or something and retract the levelers. YMMV.