There are five aircrafts - two of them are researchable. I'm not very sure about 2.2, I have played development edition some month before 2.2 release and at least then two new crafts were available later. Unfortunately they both are interceptors (or "John Rambo" delivery crafts - one assignable soldier place).
12 (or 16 - limit is not decided yet by TODO list) man squads will sure be available in future, this is in work if you had read forum /TODO list. This and many other things are in TODO list or under consideration :
http://ufoai.ninex.info/wiki/index.php/TODO/2.3I agree with "It would be nice to be able to switch base even when in a sub-window on the base screen." and "Reports on the results of interception is a bit to discrete. It's easy to miss the loss of an aircraft."
And some things will probably go too far, wont be really usable or give too much development headache, for example: "The dropship has a cannon. It would be nice if it could be operated by a soldier, in order to clear the immediate surroundings." - I think I have seen such thing rejected by developers in forum at least once before.