I don't see any problem.

There might be a slight difference in highs from the raised tweeter, and there might be a little less bass out of them as you're increasing the coupling distance from the floor (boundary effect) but that likely will be inaudible or extremely subtle in comparison to some of the sound being blocked as it is now.

Yeah, try them on a couple of milk crates.

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::