I noticed that when casting spells like Currigan's Inferno it seemed random whether it would cast where I clicked or not. I play in cloth map only mode so I can run it on my laptop. That still is pushing it late game on even tiny maps. But I wanted to see some of the pretty landscape I've been missing out on and saw that there was a hue area of effect circle for my terraforming spells! That doesn't show up on the cloth map at all.
I don't know if this is just something that has not been addressed yet, but things like this need to be fixed I think. Make sure the game is fun and fully playable with almost all the pretty graphics off... if that's not too much to ask. Massive scale down was a really played up pre-release, talk of playing the game on a low end netbook was going around. Haven't really seen any of that since then.
On another note, spell casters are way overpowered. My sovereign, no equipment, can take out huge enemies with ease. Could be that I never get involved in a conflict or use mana till I have a few shards and over 1000 mana stored up. I do like being the badass wizard teraforming the land just for the heck of it. But the one thing I have not seen is a rival. I know if I store up a certain amount of mana, get spell blast, and a decent amount of Int points the game is over. I would kind of like to see a battle between two master wizards that makes the land tremble. Oh, and fire seems slightly overpowered... or, rather, earth, wind, and water are under powered. In my opinion. And why can you research to level 10 spells if the highest spells go is 5? How cool would it be to have long almost cinematic tactical spells that cost a thousand mana?
Oh, another side note. Custom armor for heroes. Hard to get, hard to find, not worth the effort. All my "unique" recruited units end up looking like clones once they are in a full set of armor. I like the idea of training up individual warriors. Maybe more could be done with this? Research specific armor types: assassin, wizard, knight, warrior, etc. They each raise certain stats and have that look to them. Assassin could have a pack that gives the assassin skill (initial attacks avoid defense, something like that, I forget), armor could raise dodge and accuracy while lacking in defense. Whereas a warrior could have higher strength and hit with little dodge or defense, kill or die sort of thing.
Sorry for not sticking to one idea, just sort of rambling. I'm sure others have probably posted with similar stuff and I just did not see it.