Somewhere in the staff - a team that can track/predict/suggest prototype builds for export based on the age of the fleets of other nations
Drones/Bombers/Cargo/Utility Aircraft - a lot of potential here in my opinion vs varients of fighters and trainers.
Ability to keep production lines warm vs either producing or entirely done. Maybe a cost associated with preserving the tooling to be able to bring models back to production and still bid. The number of times I shut a line down only for 3 countries to solicit bids that I could have bid for was a bit frustrating.
Removing the specificity of the weapons on the builds (which countries would handle themselves and not rely on the OEM to supply), ie; specifying number of pylons vs not caring whether it has 3 missiles or 8 missiles.