In my opinion, Treyarch should have added an extra HC slot for HC Dom and kept HC CTF. Just looking at the number of complaints regarding HC CTF's removal, it does have it's place in HC.
But if they couldn't, I would have preferred HC Dom. Then again, this is a biased opinion as I play Core Dom about 90% of the time compared to the other game modes.
CTF is just boring to me and I dread having to play it in clan challenges.