I'm going be a little quick here but I think it would be great if MVP released two discs at once.
Understable/true turn Mid: Maybe call it the Array. But this disc should be something like a beat in Stingray, beat Meteor, or a really beat up Ontario Roc. A disc for the woods that will turn with power and not fight much out of an anhyzer. Ideally it would be butter for a hyzer flip, turn well on a flat throw, and be just as long as the Vector.
Control Driver: Not a fairway. While a good fairway would be nice I think everyone would be better served by a Driver that fits in the range of a PD, OLF, or Avenger. This would give us a good impression of what a driver will be really capable of if it is given a smaller or larger rim. It would also be a lot easier for MVP to make adjustments to future molds because they'll only need to go a bit wider for Nuke/Destroyer discs. Or a bit smaller for Cyclones and Gazelles.
The reason it would be ideal to release two discs at once at this point in time is because they would be able to fill out their line up bellow Driver discs (Fairway, control, or distance) in having 3 mids and 2 putters that can cover a whole lot of shots. But there would also be an appropriate addition to everyone just waiting for a driver. I love that MVP is tight lip and slower moving than a lot of the other companies. Granted, they are smaller and have to be slower. But if they wait to long for a driver once it comes out it will have lost its luster, sort of like Ti. Ti is nice but its advertising was a little bunk. An MVP driver will be nice, but in less than a year there will be "we'll we knew that was coming" sense around the disc.
Release both at once, and be awesome. Even if you have to change the driver like you did with the Ion it would be well worth it.