I agree that IF is weaker overall than standard Ulm. But to me that just makes it more of a challenge to make it work.
I got very unlucky in my initial battle...lost my starting troops and some barbarian mercenaries to a smaller number of independent barbarians (fewer indie barbarians than mercenary barbarians mind you). That doesn't happen every day. I didn't realize that my priests would cast that silly earth spell...throw inaccurate stones or something...instead of sermon of courage because Abyssian priests don't behave that way. Morale is a major boost for ulm troops.
Still, I've rebounded nicely. And I didn't remember that my mages with IF were earth 1, ? 1. The random pick is nice in that you will have mages capable of forging all the basic items of each sphere if you are selective about whom you send to the front lines.
I completely agree that these mages need to be able to research in a drain environment. But I'm not holding my breath. (I'm actually wondering why they can't...maybe it was an oversight...maybe it is to compensate for the wider array of magical items craftable at reduced cost in IF ulm.) I've also given thought to a death/nature pretender with this theme. Death for fear and nature for berserk (though that's going to make the defense really low on the templars). I'm also imagining life after death for ulm templars...and smiling. I just don't think ulm will support two level-9 blessings due to its other "requirements" for success as a nation.
The more I think about nature-9 the less I like its bonuses on sacred mages. I don't want my mages to turn berserk and stay on the battlefield. (Maybe this particular "bonus" could be made applicable only to non-mages?)
I also agree with those who said that a drain scale is rough for IF ulm. Ulm seems to me to be much more dependent than average on the sites you are able to find. I think that is why the great rainbow sage works so well for them.
I find myself wishing I could use a scorpion king as a pretender for Ulm. Fire-9, earth-9 would be devastating. Especially when you remember that a decent number of indie mages are sacred.