My own three suggestions for interface improvement.
1) Allow the targeting of site-searching spells on the F1 screen. That alone would make things much simpler for the magic site nut.
2) Allow typing of numbers for transmutation. I was playing Soul Gate Ermor on the World War map and scenario, and when I wanted to transmute hundreds of gems at one time it got kind of ridiculous. If I could just press transmute and type in the number, it would have been more helpful.
3) Differentiate dominion. Afaict, only one pretender has dominion in any province, so color coding the candle based on the colors of the controller would be very useful. It would also be helpful if you could paint the overworld map with the dominion of all enemies that you knew. This would allow people to get a rough gauge of where each enemy was and roughly how large their sphere of influence is.
Just a few ideas.
Wyatt