At low levels, fireballs and flares tend to hit something despite their precision if they are in a target rich environment and you will not take friendly casualties since everybody has fire resistance - but you will probably have the Anathenant Salamanders and Dragons along for their priest levels rather than their fire magic - which is as it should be: They are priests first and mages second. You do not have your priests around to form firing squads but to keep your troops in shape while they chew up the opposition.
At high levels, incinerate is precision 100 and accuracy is not an issue - and your priests are armed and dangerous. Still great for shepherding an army of high-bless Lava Warriors if you like that sort of thing, but able to take potshots at anybody who raises his head at the wrong time.
The Abysian mages, the Warlock Apprentice and Warlock, have astral 100 precision attacks in combat.
Arguing that since after a certain late-game turn ordinary troops are no longer useful priest levels are less important and should thus be seriously discounted would seem to indicate that the mod is directed specifically towards long games rather than both short, medium, and long games, as high level priests are very, very, valuable in both short and medium games. (I also find them useful in long games to quickly flip dominion of a newly occupied province but you might not)
If your intention with the mod
is to make a mod for long-term games solely, then my apologies for not understanding it earlier: It would explain a number of your design decisions and I suggest you amend your first post to make this clear, if that is indeed your desire.
