I assume that they have a certain amount of resources (i.e. developer time, etc.) that are allocated to HBD, allocated to GD, allocated to HD, etc.
My only concern is about the resources allocated to HBD because I don't play the other games.
While I don't begrudge the people who want and would enjoy LIVE, it's not something that I'm interested in. I also think that LIVE would involve a fair amount of development. So my preference would be that the HBD resources be used on other new features of fixes that I would enjoy.
It's a personal opinion. That's all.