You will love this book: One Line at a Time by Charlotte Warr Anderson

It how to do machine quilting designs using a walking foot.

Pfaff and the Babylock Quest have IDT. All decorative stitches, backwards, forwards, and probably sideways.
I rarely disengage the IDT, and Pfaff does have directional stitches. I think Bernina might have it by now. Pfaff let the patent run out.