Reviving dead topic...
No, I haven't revived DomBand (my name for this roguelike) - but instead I have started on a new roguelike: Dungeons of Relentless Killing, or DORK for short!
I started a thread about it over in the SE4/SE5 forum, seeing as that's a good place for off-topic discussions, and also posted on rec.games.roguelike.development...
DORK's magic system, though, will be based on Dominions' school/realm system; I'm not sure exactly how but it will. (In other words, I might have skill levels for the schools as well as for the realms, even though Dom2 doesn't, or I might do something different to simulate the research levels in the schools - perhaps the player will have to pay and wait for research to be conducted? - but there will definitely be some sort of "tech-grid" type of thing as it's known in SE4, just because it's more interesting than simple linear progressions
)