I doubt that D* would add the 15 channels, but if they did I would switch to D* in a heartbeat, and I have over 2TB of archived content on my external hard drives with E*. Very few people like all 15 channels, but those who like Voom like some. Tigerfan likes 6 or 7. I love Equator, Treasure, Gallery, Filmfest, Voom HD Movies and Rave. We all like different stuff.
I'd like to point out that Voom has produced much new programming, contrary to the 'too repetitive' position that many have. If you recall, before HGTV and Food Network began simulcasting the SD channels, they were very repetitive, too (4 hour loops). Any channel (other than movie channels) would be hard pressed to provide 24x7 HD given the infancy of HD TV programming that we're truly in.
Imagine any of you your favorite channels having to air only non-SD content. They'd be a hella lot more repetitive, too. This is evidenced by the endless threads about the stretching, and "hardly shows any HD content" of many other channels.