Putting out a new airplane would take a significant amount of work. Folks with exposure to the software business or software development or 3d modelling or skinning will tell you that it is not a trivial amount of work. There's researching and gathering the performance data, getting the 3d and appearance data, making the 3d model, skinning it, making its flight model, testing and tweaking to make sure the performance is as you intend, putting it into a patch, testing prior to release, etc.
Oh and BTW, if there WAS a way to try out a plane, in some way, shape, form or fashion, then perhaps we wouldn't have the hanger queens we are starting to get.
Most of those planes are used a great deal in special events.
One more thing about filling out plane sets, if that is such a concern for.....well whomever
Whomever = the folks who care a lot about special events or historical significance. It is a sizeable number of players.
, then where's the HE111 among others?
I would count others such as D3A, B5N, Spit I, Hurri I, C.202, SBD, TBM, G4M, Brewster, P-40, P-39, B-25C, Bf 110C-4b, Bf 109E, Boston III, F4F-4, etc., which aren't the most-popular late-war Main Arena planes, but are all used a lot in special events.
There seem to be two broad groups of players: those who don't fly in special events and those who do. The former's main focus is the late-war Main Arena and how planes will compete against late-war fighters. Nothing wrong with that, but it isn't the only portion of the player base. The latter care about planes that are historically important even if they don't do well vs. late-war fighters. The two groups are, I'm guessing, about equal in number, because in some votes we get winners like the B-29 (which is not very useful for special events) and in some votes we get winners like the B-25 and the P-39 (which are not ueber vs. late-war planes but are very, very useful in special events).
In the vote where the B-25/P-39 ended up winning, the He 111 got a decent number of votes. (I think so did the Pe-2, which is very interesting because that really tells you that some history buffs are voting.) At any rate, the lack of an He 111 is not because people don't care about historical significance or don't want the He 111 -- it tells you that folks wanted the B-25 and P-39 even more than the He 111 and the Pe-2.