Drivetrain Idea - "Box Drive"

[pimathbrainiac]

So over the summer, I thought up of an idea for a drivetrain I dub "box drive," inspired by H drive. It requires 8 omni wheels, and it strafes while being able to retain more of the traction of a four traction wheel drivetrain than mechanum or omni, while being more obtainable/less costly to the common FRC team than swerve drive (read: my team can't do swerve drive for various reasons, including money and lack of a machine shop sponser).

As far as cons go, If you need to feed from the floor, like in rebound rumble or ultimate ascent, this is unusable. It shouldn't be a problem in rack-n-roll or logomotion style games, though.

Since I don't know CAD, here's my ASCII art interpretation of what it would look like top-down, each line representing a wheel on the perimeter of the robot (With the orientations matching the orientation of the lines) (All of these being Omni wheels):

front
__-__-__
|-------|

|--__ --|

As far as programming goes, if robot oriented, strafing is done by moving the horizontal wheels, without moving the vertical ones. Moving forward is done by moving the vertical wheels and not the horizontal ones.
EDIT - rotating would be done with moving the vertical and horizontal wheels accordingly.

The most effective way to use this drive would be field oriented, which I don't know what to do. I would need help coming up with the calculations for the rotations of the wheels (the forward and strafe vectors themselves are easy enough).

So this is two part:
1) Do you like this drivetrain idea?
2) What would the general calculations be for the wheel speeds, with distance between wheels in a variable?