The ZEM values we have are not classic. As has been posted on the bug forums, ZEMs were pretty flat throughout the game until random ZEM mods were implemented in luclin.
By all evidence posted, ZEMs throughout most of the game should be 75, with dungeons being 80. Some specific areas went up to 100 such as Kedge Keep, but these were edge cases.
Random ZEMs, and ZEMs higher than 100 came about with the implementation of "Hot Zones", which would be changed frequently. The static, and crazy high ZEMs we have on P99 are like a Hot Zone patch stuck in time, and are out of era for the project.
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-Glasken, coming out of retirement for Green99  |