I'd be more interested in one if it wasn't in the style of the T-BC21 Trackman Marble. I've never really cared for ambidextrous designs and that scrolling solution is no bueno.
That said, they are working on a GameBall Pro which is closer in style to the MTE. That I'm definitely interested in, especially if it ends up being cheaper than a Ploopy Classic - which I ultimately doubt will be the case thanks to tariffs.