I think it was a stupid decision to remove 4x. Leaving 4x in the mix does not require additional programming, and does not simplify the interface enough to justify its removal. I have no idea why Dish thought that this was an improvement to their interface.
Agree with this statement, but going from 722 to Hopper 3, I haven't missed it a bit. Used to use it (very occasionally), but really don't miss it.