Its a minor point, but I think the P-51 looks so much better on the ground when the inner gear doors are extended.
![](http://i.imgur.com/Tlb7xjF.jpg)
Would be cool if you spawned with the inner doors down, and after engine is started they would automatically retract after 3-4 seconds. When the engine is shut down, if gear is down and speed is 0, the automatically extend. Or actual control of them with a key would also be cool.