with the Compass being confirmed as a PALA aircraft, BDF is somewhat lacking in cheap quick-response aircraft. to some extent the cricket is this, but it's also slow and nearly defenceless against enemy aircraft, so a proper compass-analogue for BDF would be nice, and i think something comparable to a Harrier would be a good sorta thing to aim for
in BDF fashion and to operate off the annex (and/or potentially off a BDF dynamo-equivalent), it should be VTOL-capable (probably either harrier-style vectored nozzles or XFV-12-style thrust-augmented wings), though possibly with heavier loadouts restricted to STOVL or conventional takeoff. speed range would be mid-high subsonic.
it'd be a bit costlier than a compass (price point ~30mil) largely due to the extra versatility offered by the VTOL system, with comparable payload and possibly a bit more/better countermeasures, as well as an internal 20mm HE gun with less fire rate and ammo than that of the vortex or revoker (or possibly a 12.7mm gun or 2 instead). importantly, it should be able to carry roughly equivalent AGM-48 loads as the compass to allow for similar convoy-busting
in terms of appearance and configuration, i think it could be good as a single-engine aircraft, with a ~50-60kn class engine for similar TWR as the compass, and either afterburning, water injection, or something similar to provide the thrust for VTOLing. an F/A-18-esque mostly-straight wing with a large LERX could be a cool aesthetic, providing good low-speed authority to help with maneuvering and managing the transition to engine lift flight, though a canarded configuration could also be neat. intake air could be provided by an under-mounted DSI or airscoop (j-10 or f-16 style), while additional vents on the fuselage top or wings could provide more air for takeoff or hover (keeping foreign objects or ocean spray out of the engines
overall i think an aircraft like this would suit the game pretty well and be a good addition to the roster
