The stabilizer jacks are meant for only that - stabilizing, not lifting or leveling. After unhitching and leveling your trailer, lower the stabilizers and put enough "down" force until you just notice the trailer begin to move up - but not enough to affect leveling.
The big-boys you refer to that use scissors jacks should also not be using them for leveling, but have heavier jacks as stabilizers. Here's the thing - almost all trailer frames are designed to be supported mainly the axles, with stabilizers keeping the frame from flexing when you move around in it. Any upward force on the corners by jacks can twist the frame. In time, that can affect the seams at corners, around windows and doors (on fiberglass sides), and where the roof meets the sides. Also - doors may not close or latch properly.
If your trailer is level and you put the correct amount of pressure on the stabilizers, it should all be good.
Just my experienced opinion.
2015 Jay Flight 32RLDS Elite
2012 Chevy 2500HD Crew Cab LTZ (6.6L Duramax/Allison)
Equalizer Hitch (1200# bars)