[interestednovice]

It's because OFAH rates well and is staple in the channel's performance, despite how annoying the repeats can be.

Well yes, although almost all of Gold’s content did not originate in HD.

Eden was one of UKTV’s first (if not the first) HD channel because it shows nature documentaries and other content which both benefits hugely from HD and originated in the format.

So to replace one with the other, except for viewing figures, makes no real sense.