This is a mood I cooked up about 10 years ago, but never uploaded due to not having any change log of the changes I made. But due to popular demand I decided to upload it now.
Basically the mod is based on Wizards&Heroes and UOP 1.4
Units are mostly as in 1.4, and the new units introduced by 1.4 have been added to the units you can encounter or recruit at various sites.
The changes W&H made to encourage the AI to build new cities have been retained, as well as increased cost to buffing spells.
I was personally very happy with this mod since I only play SP, for better AI and more unit variety.