hmm maybe:WHy have the flat bedrock mod? CoFH Core adds that in its config
Code:
Changelog of CoFH Core:
1.5.1.0:
-IMPORTANT: This is now a proper "coremod". It goes in the /coremods folder.
-Added: HD Capes and Skins: Use /cofh to see the command structure in-game.
-Added: Flat Bedrock as a Config option.
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Notice the 1.5.1 in the version number of the mod. Ultimate (which this Beta pack is based on mostly) was created running on 1.4.7. FlatBedrock was introduced when CoFH Core did NOT have this feature. As much as i agree with you that it is now not needed anymore the next time research why something was included in the first place, it might answer your question.
Now for 1.5.x builds i hope that FlatBedrock will be no longer included but i can not say for 100% that it won't be in anymore.