I, for one, am looking forward to hearing the new mix. Last year, I heard a bootleg remix from someone who dubbed himself Lord Reith who de-mixed and re-mixed most of the Beatles' material, and when I heard his new version of Revolver, it was an absolute revelation.
There seems to be two reasons the mono mixes are usually preferred: the first is that the mono mixes were the priority since that is how most fans would actually hear the music (and therefore somehow more "authentic"), and the other is that the stereo mixes of the pre-Sgt. Pepper material often interfere with the "willful suspension of disbelief" since they commonly have the elements hard-panned to the left or the right without much blending across the middle; hearing the drums in just one speaker, for example, is just plain weird.
So when I heard the Lord Reith remix with the instruments and vocals blended across the channels much more naturally, I really connected with it in whole new way. In fact, the final track, "Tomorrow Never Knows," never made much sense to me, but with that remix, it suddenly came alive.
So if a very talented guy somewhere on the Interweb using an alias can create such a magical version, I can only wonder what someone with the last name Martin can pull off.