Balance mods are compatible with MCCS, but in the case of the mod above, I would advise changing its extension from h5u to pak and placing it in the data folder, after which you should run a file scan so that the mod's scripts can pick up the changes.

Added 20 minutes ago
I've updated the mod to version 0.3.3. You can download it through the launcher, or download this archive and extract it to the main folder of your game.

Changes.

General.
- Fixed a bug that caused the game to crash during AI turns.

Map patcher.
- Now disables creature weeks on maps of size "Huge" and "Incredible," which should prevent crashes and increase game stability on maps of that size.

NHF.
- Vikonia's special ability now works correctly.

NAF.
- The "Code of the Empire" artifact has been temporarily disabled (the artifact remains in the generation list so that you can collect the set, but it won't work for now).