1) Guidelines / Rulers (just like LiveType 2, Photoshop CS4 and Quark Xpress have). If I’m setting manual Black bars for example, I’ve no idea where anything is on the screen and every clip is estimated to the next one, or any other estimation or exact placement of elements.
2) Full 64-bit integration to Snow Leopard
3) Background Rendering
4) Speed Change Rendering in the Background
5) Background Exporting
6) Full Round-trip integration with Adobe Photoshop CS4 Extended (Already excellent if Movie is Exported / Imported for frame-by-frame effects editing but has to be either Uncompressed or one of the Pro codecs to accomplish that without resolution loss)
To expand this further, I’d like to see Apple extend the absolutely BRILLIANT LiveType 2.1. It’s interface (with bespoke Typeface use / kerning etc.) is a bit clunky, but it can accomplish a lot of things that wouldn’t be worth starting up a Motion project for.