Custom lists are only useful if you are giong from channel to channel to channel, or, if you use a guide (big or mini). But, going from 705-1 to 709-1 is several extra buttons. Or, my lcoal Fox is Channel 28, and from there to 705-1 like I had to do yesterday, requires several guide pages, or, the two extra buttons. I think it's just a nuisance, it was so much better last year when they were on seperate channels altogether. Ditto on the RSNs, I hate the -1 suffix.
THe problem here is, that's not the way locals work. My lcoal HD is the same number as the SD, and hide SD duplicates takes care of that. I don't understand the discrepancy here.