change the toggle magnetism short cut from the Shift key to Ctrl+Shift keys (or alt+Shift under Mac OS X), and use the Shift key for horizontal/vertical move + proportional resizing,

I'm all for that! Sounds good to me. Yes, that's what other programs do and that is what I'm used to.

I have yet to test the latest beta. Been kinda busy lately. I am eager to check it out though!