Ultralight actually helps with the price. VSTOL seems sketchy because if you actually use it you must make control rolls. I did have the SRCS and Propellor. Omni is ok, but a bit of a waste for something disposable.
More attritable than disposable; the Midge II missed the Jihad, so the Midge IIs are primarily going the Gumerian Powder Keg as an anti-insurgency drone. By the 3080s their likely opponents are mostly infantry with maybe an AA Weapon Mk.I, so the environment is permissive enough they're not likely to lose tons of the craft. While the faster repairs of the Omni mod are not really relevant, the faster reloads and compatibility with existing omni-pods are real benefits that are worth paying for, considering your system costs are going to be overwhelmingly dominated by the necessary Dropship and Jumpship transport with how cheap this type of vehicle is.
As for VSTOL control rolls, yeah... I'm not going to try to rationalize that poor game design decision. We've always run it as though 31st century VSTOL... works.
Retry I like the design, but my concern as an opponent would be that this unit has 6 points of positive quirks for no negatives. I would go with:
Positive: Internal Bomb Bay
Negative: Fragile Fuel Tank, Weak Undercarriage
The logic being that this would represent the structural tradeoffs that were made to install a full bomb bay in such a small craft.
The Midge II is more a "campaign" vehicle than one for use in a 1v1 pickup game. Something your force can call a squad of craft for an airstrike against the OPFOR bunker or something. For pickup games, I think a support craft with all of 10 BV before installing the actual bombs would be a bit... unsporting.
Generally I don't worry about balancing quirks- I use them as sort of soft factors to differentiate otherwise similar 'Mechs. Particularly well designed 'Mechs may have multiple positive quirks with no quirk-based downsized (like the Archer with Battlefists, Stable, a Command Mech and Ubiquitous), while less well designed 'Mechs might have several negative quirks with no positives to compensate (Firebee's weak legs and poor life support).
With that being said, I like that in-universe logic you have to go with those negative quirks. I think I'll add that to the design.