I thought it might help to show some of the sprite graphics I developed for this mod. The Grim Reaper and the Pantokrator (the glowing dude) are all original. Desire is based upon the Succubus monster template, and the Teratos Rex upon some dinosaur model photo I found on the internet, and adapted accordingly.
Also, some strategy thoughts I developed during playtesting:
Desire: Bump up your "dominion" setting at onset. Set up Desire in a high-dominion safe province, assigned to summoning Suitor allies. Equip your various armies with as many Priestesses of Cytherea as she attracts, since that will be infrequent even with a high dominion. Keep your Priestesses assigned to a well-guarded commander, behind the lines. Have a spare commander or two always ready to retrieve your priestesses if they rout. After every battle, make sure you check your "army setup" in case the Priestesses (or your Goddess) have charmed any enemy troops.
Grim Reaper: Use Grim as a SC against independent provinces. Try to keep him in your dominion, especially against other players; while he is deadly as a SC against regular armies, he can be killed by strong priests, magic users, or magic armies (he is "undead", after all). Against other nations' armies, have him assassinate a few commanders before attacking, preferably while backed up with other (regular) armies. Use his high mobility as a "roamer/troubleshooter" to keep dominion high at your frontiers, and fight off incursions at the edges of your domain.