Unfortunately the TV tuning stuff is a bit of a mess at the moment. It certainly isn't as user-friendly as Win7 MC.
The problem is many times worse with DVB-S where there are hundreds of (1),(2),(3) etc extra channels.
I used to just willy-nilly delete all the unwanted ones, the extra () ones, the shopping channels etc. But there are two problems with this:
1) They reappear every time you do a rescan
2) You end up recording inadvertent channels which I don't think has yet been fixed (bug reported months ago).
Problem 2) arises because of the peculiar way MC choses which stream to record from each multiplex. Rather than recording just the stream containing the channel that you want, it record the whole multiplex, but subtracts the other channels from it. However it only subtracts the channels it knows about from the multiplex and so if you've deleted some channels from your library channel list, then it'll fail to remove those from the recording. Weird! So for the moment I've kept all channels in the library which makes it a mess.
Once this bug is fixed, then it might be easier to have a tidy library. We could also post a 'playlist' of channels on the forum too, so that it would be a simple matter of adding the playlist to your library to get eg. All freesat channels (rather than having to go through the list of encrypted stuff and deleting them all). This could be user maintained/crowdsourced on the forum, so that when transponder frequencies change or new channels appear (like at the olympics), only one person needs to go through the rigmarole of retuning and deleting/tidying.
SBR