I'm new to RifE as well and with a few games under my belt I have to point out that the AI is really weak. Just my last game as the Khazad I was comfortably and slowly expanding so I could keep my vaults up and by the time I had four cities up my scouts had pretty much covered the world only to find that every AI was still stuck with their initial city. This was played on Emperor. The AI slowly began expanding and teching but I was so far ahead that it felt stupid to even play and I eventually gave that game up when they didn't have even such basic techs as Cartography etc. while I had finished Taxation. Additionally, I feel that getting a free higher tier unit at the start of the game from a dungeon can be somewhat of a gamebreaker. I got lucky and got two Dwarven Defenders out of two nearby barrows/forts and since they came with 10 exp out of the box they pretty much dominated. One went off to kill Orthus and while exploring a lair mutated so that he healed 70% each turn which is just broken. On that note, there should be a limit to how much +healing one can get from a mutation. I'm sure I could count my stars for that particular mutation but that one defender with 150 xp, full drill full combat could take down backwards AI nations on his own and didn't even break a sweat doing it. I also got a free assassin from a lair while exploring and this was also when the AI was still toting warriors/archers tops. I love the additions and the complexity of the mod but the AI is in a serious need of a fix and a few things could use some good old balancing.