First time I've ever really asked this question.
This is by no means a vote, but it helps me gauge what people here would want. Gather market data, essentially.

Simple VRs

Slightly re-tuned older craft now with VR capability, could be done en masse.

For example: a B-88B (Model A pictured here) with a cockpit shoved in it.

FA-228-3

A more refined version of the FA-228.

Same core plane, just with a few adjustments and VR capability. Very, very early in development and on hold.

Soian Star Fleet

More replicas from the Soian Star Fleet.

Though S.S.S Warspite is not released as of present, these would be similar: Simple airships with few function beyond flying (poorly). These could be built pretty fast, but getting them to "work" would be tough.

Graingy Proto-Files

Graingy prototypes. Essentially a look into the depths of prototype development in Graingy. Unfortunately actually dating these plans would be difficult, but a few early trends could likely be picked up on.
(Note: These are basically just old craft that sorta work, but not originally well enough to upload. These would be bulk uploads in essence, something to pad up the upload schedule. If the newbies are allowed to do it so am I.)

Hamster Plane

Plane powered by hamsters. The exact details are secret and need development to test the concept.

Other

Some other idea? I'm not asking for planes to replica or massive projects, but rather somewhat simple things that could easily be done. Something lighter, ideally.