Regarding BTE, I believe similar results (in some aspects) could be achieved by a quick A,B,C,D type test with say 10-20 questions randomly chosen from a much larger pool of possible questions concerning some of the basics contained in the UOTC Handbook (which would need to be expanded with more material, including videos). I would suggest that this test becomes part of the authentication process for newcomers and that it would be valid for a given period of time (for example a month) before a refresher test would be required to join the TS channel for A3 servers (refresher tests could be much shorter, say just 5 questions). The question of how difficult the test should be, what should it cover and what is the thereshold required to pass is a question open for discussion.
Of course this would not address all issues, but at the very least it would help ensure a higher degree of common knowledge, which would be periodically checked for all active members of the A3 community without exception. The functionality would be similar to the auth system, as it would prevent the user from joining the A3 Primary channel, while still allow him in other channels if he fulfils current auth criteria.
This kind of system, once implemented, should require only minimal input from UOTC, mostly periodically changing or adding questions and expanding the reference material. Practice sessions like we had before would also come handy, especially for new players, who could study some written material and then focus on practice and receive feedback from more experienced players, as well as gain some more confidence in their abilities. This way they would also be less intimidated when joining the primary server and maybe more of them would come back.
Sorry in advance if all of that is somewhere within the gigantic thread which JB has linked.