The recent update got us half-way there: When you select the SD version of a channel that is available in HD, pressing C on the remote switches to the HD channel. But why not take it further? That is, If the STB is set to use 1080i or 720p or connected via HDMI, why not auto-map the HD version of the broadcast to both the lower and the higher channel#s? I can't think of any reason why anyone would want to watch the SD broadcast if the HD version is available. And then one could watch local HD by pressing 2, 4, 5, or 7 (etc.) rather than 502, 504 (or worse, using the clumsy Channel+C combination}.
Cablevision's HD STBs work this way - it would be nice to see FIOS do the same.