Graybeard, you are so right, the saw is unstable with only one leg on the floor but if I slide it on the two front legs, it's not too bad. I am very careful and only slide it straight out from the wall when I want to use it. (I really need to re-organize the shop but that's another story.)
If I make the cross-bar of the "T" lever wider, say 2 or even 3 feet wide, it would improve the stability and that may be what I end up doing. Or, I may make a stand like yours (very nice, BTW, I may use it as an inspiration for a new stand) that gives more room below the table for blades, etc.
Did you bolt your saw to the table or does it stay by it's own weight?
Jim