Here is the WOK5 History entry, noting the MRE fix:
V2.3 01/06/01
++ bugfixes : creature dissapearance bug fixed, spy count bug fixed, crop spell bug fixed
++ The MRES maximum of 999 is now cleared, also (by popular demand) the crop limit for a Province is raised to 500 crop
I was a happy camper, but nevertheless never got to explore the MRE max again in any other game, until this year's Champs, when I noticed that after using a Protect spell, my MREs stayed at 999.

V3.30 07/03/03
++ corrected a bug with the Hobgob Tribe (#03). They now give the correct 2% EFF per slot traded
++ Tribe #14 Shak-Akash is back at filling MRES up to 100 (down from 150)
++ fixed a bug that had MRES go over 999 points
Al apparently changed the MREs back to a 999 limit, although I don't remember anyone ever discussing this on the boards before it was done. Certainly, I never knew about it. I don't see the point of having a limit --- it's very rarely reached anyway, and why can't you devote your resources for protection if you want to? As it stands now, no matter what another player does, you can always hit him with 3 Monsterburners, and wipe out his MREs. That doesn't seem right. So here are my questions:
1. Was there ever a discussion on this which led to Al changing this back to what was apparently an original "bug"?
2. Who is in favor of this limit?