Is it OK that sovereign does not limited by minimum intelligence requirements of the spells? Is it a bug or was intended this way? If it's intentional then what the meaning of intelligence stat for sovereign? Why would anyone spend stat points on it ? In any case the description of that stat is wrong - it does not determine or affect power of the spells, or is it a bug?
What with caravans limit? It's not shown anywhere in city screen. Is it lifted? Also previously caravans provided food, now they add 10% to gold?
Using magic "eats up" all your action points in combat. Is it intentional change? It's a bit strange that you can move , fight then use magic, but if you use magic first you can't do anything more.