The game is too easy. Mainly because there are a lot of utterly overpowered abilities which exist in this game. A player can easily take advantage of them, but the AI cannot. And the AI seems to run around like a headless chicken most of the game, rarely attacking the player.
I'm hoping for more balancing and AI changes, and knowing stardock, they'll get around to it... eventually (with additional expansions and such probably).
As it is, I'm just playing this game for now, but as soon as Rome 2: Total War and Age of Wonders 3 come out (I think they're August and October 2013?) this game is probably off my PC permanently, unless there are some massive AI and balancing changes.
It's was fun figuring out the game and how to play it, but once you do, there's no challenge to it whatsoever, which makes it boring.
This is playing the game without ever loading saves (I now have autosaves turned off due to its bugs). If I lose a battle, I lose it, not that I ever lose battles anymore (I did the first few playthroughs, but it's easy to figure out how strong/weak the enemy is after getting some experience in the game).
I would like to say this is no longer the case.. in my recent experience so far.. the AI has definitely been massively over-hauled 
Also I've played AOE3 too but their AI is semi-weak.. it needs some toughen'ing up
And don't get me started on AOE2's ai.. which if I'm being honest is non-existant.. what they've done here with "LH:FE" is so impressive.. (so far) I don't think anyone's done anything better before..?? maybe thats why the game crashes processing those attack scripts? (seems graphical but I dunno?) but I don't think even civ has. that. no scratch that.. the AI of civ2 was "not bad" I think.. 
But in terms of AI programming so far.. i'm all thumbs
Post your save the penultimate turn from victory on insane/insane. Then we'll know you're not a troll.
I still have my saves from a year ago.. if you really want e'm? 
But I think yah, know with the game having been updated once or twice since then.. they may not work.. well let me know if you want e'm?
Do not get taming
Do not use save/load
Play with premade characters
If it's not enough, then create difficulties by yourself:
no mage heroes
no heavy armor
e.t.c.
last game i was facerolled by the kraxis on expert/expert.
I think for me it's good difficulty now.
At some point what's the point of putting these features in from game makers..? (if you can't
use e'm?)
Let me be perfectly clear.. MAUL last year was frickin' awesome if you played the game and you got to watch maul just kill everything in it's path.. it's awesome! But the point was.. maul made it too easy.. I don't even know if "maul" is in the latest 1.7b patch..? but I just assumed it was..? and chose to start playing this game again with more challenge in mind for myself 