Radio Shack stores seem to be just the right size. The key would be to curate only the best-of-the-best Android devices, Google devices, Microsoft devices, Sony devices, etc. Not everything, just the best.
Really smart plan.
In 2005 I co-wrote a senior paper for our business course on how to turn around Radio Shack. Our idea was very similar, only instead of focusing on devices, we thought it would be more focused on video gaming — a sign of the times I guess. Either way the concept was the same: small selection of really great things, and things that the employees had a deep understanding of.
This very much reflects the deep knowledge tradition of the chain. I wish they would do it.