As we know, there are many problems with trying to squeeze TMP into the canon. It works as a follow-up to TOS, but really only if you allow for more than just 2 years between the two. As a "prequel" to TWOK and the remaining movies, however, it introduces even more problems (elapsed time, slow rank progression, complete reboot of uniforms, etc...). If you assume that TMP never occurred and there's about a 12ish year gap between the end of the 5 year mission and TWOK, it smoothes over many of the bumps.
Would it not be simpler to just pretend that TMP never occurred, and ex-communicate it from Trekdom? What are the pros and cons? Discuss!