OK, if you get that wish, then I want to have a letterboxed output capability in single mode.
I use single mode (for various reasons) and occasionally pipe it via RF (SD) to 4:3 TVs in the house. When watching HD widescreen source material, I have to endure anamorphic stretch on those sets.
From TV1, I use component cables to my TV, S-Video to my DVD Recorder, and put a splitter on my audio cables, 1 going to my audio receiver, the other to my DVD Recorder. That seems to work out just fine.
TV2 I only use for my kids cheap TV's (actually split the coax) and use the RCA cables to my old VCR (which rarely gets any use).