Pls recommend me mod(s) that are making AI and gameplay more challenging

[dzzirt]

I dont need mod that changes anything in the unit stast (or "balance" - like Lands to conquer does :) ), game map, unit's upkeep values, their prices etc., for the same reason i doubt ill want ultimate AI
actually i want mod that is oriented for campaing gameplay, but not for custom battles etc. like LTC is.