I think you just explained peoples problems in your own post. "we're building a better user experience, so that's nothing to fret about". People have the option of "good right now" or "good in the indefinite future", and the decision is pretty obvious. Not saying Namecheap is bad (I use them myself), but the crux of this argument is that GD has the right interface NOW, while Namecheap will have it EVENTUALLY.
Good point, but along the same lines: Namecheap existed as a registrar when I purchased my domains, and GD did not. The interface isn't enough to make me want to go through the hassle of switching.
