More variety! Especially of the semi-uber type. If there were 10 planes of roughly LA7-P51-SPIT9 capabilites we would see more of these types of planes flown. There are many planes that would fit the bill. New variants of the P-38, Spits, Yaks, 190's etc... could easily provide an alternative platform for those of us who choose not to handicap ourselves by flying lesser aircraft.