Breaking a lance in favor of the Spitfire Mk I, it shouldn't be so difficult to model and add it in a next patch.
The main parts of the common models for all the Spits, are made: graphics, skins and all the other technical properties.
It would be a simple matter of to take a latter model, to change some of its FM properties (air speed, ROC, corner speed, etc), to change its weaponry by 8x.303 MGs... and we would have the earliest operative Spit.
