I believe Gremlin has it right, no new planes until TOD is released. This brings a problem I think, I don't know how HTC is going to address it. TOD is said to be an arena meant to attract a different type of gamer.
If it succeeds, and I hope it does, then there will undoubtably be some/many new players who, like a lot of the current players, know quite a bit about WW2 aviation history.
These new players will want the whole TOD arena to be as historically accurate as possible i.e. the same planes that were used by each side, at that particular point in the war.
Bringing what will be a new game to most of them with an incomplete plane set and substitutions for the actual planes that were used probably won't go over well with them.
It is, after all, marketed as a new game, so most people would expect it to be complete in that regard.
Again, I don't know what HTC has planned so hopefully I'm wrong about all this. I definitely wouldn't want the TOD arena to go belly up so we'll just have to wait and see and have a little faith.