You should just take the time to make a customized favorites list. It took me 30 minutes to get it to my liking, but I wouldn't be without it for anything.
You can lock the system, hide locked channels and edit which channels are locked. They don't show up in searches, guides, etc. If you have a recording of a locked channel, you have to enter in the code to see what it is (or unlock the system temporarily to see). I locked out all the channels I don't want to see (most of the 9xxx ones, PPV, shopping, ect). You may want to keep an eye on it though, so you don't keep a channel locked that gets added later.
In short, it's an easy way to remove all the extra channels you'd never watch, or duplicates. And you can easily undo it.