It is possible to modify the artwork in the game and then choose your markings via the included Paint Shop (for campaign missions only). It isn't clear to me whether both nose and tail art can be modified, but it looks like it might be possible. I designed a red Maple leaf as you can see top right.
The two shots below and the log info on the right are from my second and third campaign mission in the final campaign in January, 1951.
Force feedback support in MiG Alley is quite complete and so far seems very impressive. You can even select particular areas to include or exclude, as below. Support is at least as well done as EAW.
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