We don’t really take external submission for new stuff. We’re glad to have folks branch off and re-submit if they have a significant improvement to something we’ve done (our stuff seems to work as intended as far as us non-pilots can tell) or want to add functionality for XP or P3D or something to our existing stuff, since our instruments are for MSFS only.
This is an older thread that’s mostly obsolete now as links to stuff are pretty much dead since our old Google Drive repos are shut down. You might want to move it to the newer, more relevent thread here:
Another option if you want to share your instrument(s) with others in the community is to join our Discord where we have a section for users to share their creations.