It would be nice to be able to carry the flag on your back. If you switch to a different weapon the flag would automatically carry the flag on your back. I have been playing Capture The flag since 1998 and there are a lot of Capture The Flag games that allow the user to carry the flag on your back. It would be nice to have a setting that would allow you carry the flag on your back. 
Also:
It would be nice to have a setting to be able to carry the flag in “ANY VEHICLE!!” 
( I use the above setting in all my MCC Custom Game maps! )