As far as I know Versus XIII never really stopped any kind of development of any other project at SQEX. If anything, I've always heard that they put people from the Versus team to help in others projects.
Besides even if after 4 years people still like to bitch and blame how the XIII series made everything worse, SQEX got stuck because of social games (which is said
that they left behind for now) and fixing Final Fantasy XIV and that put any other big project to be released later. Not to mention that Nomura (director of Versus XIII) is always busy with Kingdom Hearts.
The whole thing with Type-0 was all because of bad timing, which sucks because Type-0 looks great and FFX HD seems to be taking this long because they seem to be busy with remastering the game or something like that.
...oh and Bravely Default is stuck in limbo for localization.Edit
: Rumor: Final Fantasy Versus XIII renamed XV, moved to PS4
Something has to come out with all these rumors going on... I'm really bored of seeing the game being talked in this manner for such a long time.