Getting back to the original question of this thread, yes I do think the A1 lite will be commercially viable. At the moment, the A1 Lite will have most, if not all, of the capabilities of the A1. Frankly I would rather have an A1 Lite because it is so much smaller. Not only does it seem to fit in the historical line up like an A500/600/1200, but it is still processor upgradable. The only disadvantage from my point of view is that you can't upgrade the graphics chip. Still, even a PPC G3/Radeon 7000 based unit is so far ahead of the hardware that I have in my current A3000 Amigas, that I get a smaller and more powerful box that should have far more capability than an Amiga I have ever owned.
On top of that, it is a very viable set up for anyone wanting to do a kiosk type setup. It should also be very stable and inexpensive to run in the long term. So yes, I think the A1 Lite is a viable machine for the market.
