So, let me get this straight. You pick 3 teams and adjust all three lines however you please. If you win all three, you get paid (almost) even money ($19 on a $20 bet). Is that right?
And your offer here is that I pick the three games, and you'll pick 3 winners (with a 7 point adjusted spread in your favor). If you get all three right, I pay you $10. If you get any of them wrong, I get to ban you?
Now why in the world would I risk $10 when I could ban you for free if I wanted to?