I totally agree with everything you said here, I hate the fact the Academy players are always used as a reason not to add more real licensed players, 20 licensed players is nowhere near enough, now the gameplay is starting to reach a higher standard the game badly needs more official players added to truly appreciate all the updates the game has had.
Ross said at launch of AO Tennis and has since said on Twitter and other forums a couple of times at least that more players would be added and that negotiations were ongoing but obviously could not go into more detail than that.
I appreciate some people are content using the Academy players and fair enough good luck to them, but, personally I don't use them at all as IMO most look nothing like who their supposed to be apart from one or two like Federer who looks "ok" but most importantly as Tomma18 has said they will never be able to compare or replace the real thing for the reasons mentioned.