I would like to see differentiation (for some contracts) for airplanes and rockets. For example, visiting some place or high-point. One note. Crew-report contracts can be completed without information transmitting (or bringing report back to the KSC). I think it would be more logical if player must deliver contract's information somehow to home. And one more thing. There are airplane-parts-testing contracts (to test Basic Jet Engine, to test Small Gear Bay, ..). If player hasn't Aerodynamics, it's impossible for him to complete the contract by regular airplane. As a result, player can only pass by rocket (to deliver Basic Jet Engine to some height at some speed). I suppose it can be interesting to have airplane-contract (to test or smth else), which pushes player to use airplanes. For instance, the contracts provide Basic Jet Engine, Small Gear Bay, Mk1 Fuselage, XM-G50 Radial Air Intake, and force to use airplane.