There's also the fact that some horse owners pulled out during the negotiation stages...
... after the storyboard was greenlit. It's the stupidest thing I've read, if it's true, which explains the massive change in the PV and final product as well as the loss of certain characters.
Numbers jumped up after GBF was mixed with the BD, but a mobage is enough to keep the series alive until the end of time so yes, it will increase. They have a manga, OVA, merchandising event and other stuff planned out still. Stream is in 8 hours or so, which may cover it.