This mod is just fantastic! I always play SP on Emperor difficulty with 3-4 enemy AI, and this mod just spices things up quite a bit.

Since I've been using it so much I came up with some suggestions for improvements:

- sea treasure site rewards are not proportional to the effort. In contrast, defender strength could be booster for Heart of The structures, Inns, Flowrock Quarries and Library of Dark Arts

- lost library reward also quite underwhelming since you only get to clear them late game, when research is pretty much done anyway

- some units' default action is causing issues, like Titan's 'Meteor Strike' or Azure Dragon's 'Dragon Stomp' (if you're not using the Move option you can accidentally hit your own units because this special ability is defaulted)

- would be nice to get some variety in roaming unit spawning, besides necro and monsters

- speaking of necromancers, they could benefit from mercenaries like the other races can; also some economic building equivalent of what other races have would be nice. Or maybe instead of gold, have buildings that generate mana / research / casting points

- as necromancer, if you take a city with Marketplace and Mercenary Guild, you still benefit from them, it's just that you don't have the option to build them yourself..

- mercenary units could be available depending on the race, so that you can only recruit those types in your city

- should the Inn offer more Mercenaries instead of regular units? just a thought..