I was giving that as an example. What I'm saying is that since Dish has this capability, why not extend to it to any channels that share the same transponder?
It would be an interesting piece of programming to be able to make sure that multiple streams on multiple transponders did not conflict. For example, if USA and ESPN was on the same transponder and USA was being recorded a user wanting to watch ESPN could theoretically use the same tuner connected to that transponder. But if that user wanted to change channels they could not since it would interfere with the recording. Protections would need to be built in to make sure that changing transponders on that tuner was not going to cause a conflict.
It is a lot easier to keep the logic straight with four channels than whatever 8 or 9 channels happen to be on a transponder tuned.
Having it only work for certain locals is rather limiting, and becomes less useful every year since fewer people watch network programming (let alone two things at once) Additionally, networks have followed cable's lead by repeating some shows later in the week, either on the same network or on a cable network.
The most popular show on cable last week had 12.865 million viewers ... number two was 5.415 million (the aftershow for the most popular show). ESPN had the 24th most popular cable show, Fox Sports 1 had the 22nd most popular cable show. Five of the top 25 cable shows were SpongeBob (#10, 11, 14, 15 and 18).
12.865 million on broadcast would have been the fourth most popular show. Number two would not have made the top 25 (#25 broadcast was 8.222 million viewers). BTW: Viewers on both lists includes live and second day viewers.
Broadcast network shows remain the most popular ... and most worthwhile to create a feature to capture simultaneously. While broadcast has rerun programs later the same week the cable trend of immediate repeats or three hours later makes it a lot easier to reschedule for conflicts.