1 can you make the doorway larger to give figures more headroom. you can lower the jawbridge to floor level and remove or 'scoop' out the base in the door area
2 will the interior have details and paintwork. it would look cheap if it does not. you could even have some filmation influence?
3. can you spend the money on more fan demanded items like the monster dungeon base than less demanded things like the wind raider garage floor and the handle which i guess would not work as a handle.I also dont think the jetjack adds much value to the set. if you used it or a child were to use it they would drop the castle and break it
the general sculpt and look of the outside is fantasic