While I typically only play MA(my theory being that the game is too complex to effectively learn all 3 eras and be the best mp possible with limited time), and I am way too competitive to play at less than full throttle, I am on self imposed exile from MP to check out many of the mods and some of the races that interest me outside of the middle era.
Having fought EA Abysia in Kingmaker, I was intrigued by their pd, which i found to be INSANE. And I saw some interesting possibilities with their sacred troops and mages as well.
So I have played a sp game and a couple of blitz mp games with an imprisoned Cyclops,
and a e10 n4 3o 3p 3h 1growth 2 drain 5 dominion with impressive results. One issue I do see with my set up is my troops fight too much in cold provinces with the weak 5 dominion.
But when you are invading, even with a strong dominion, you likely are going to be fighting in hostile dominion anyway. The Anointed Rhuax, properly equipped, is not a bad thug.
I do see issues on a larger map. 1s mages will not cut it, and lack of travel power will hurt as your empire expands. If you can conquer an astral or air nation early, by the time your Cyclops breaks free you can empower him with air.
Or if you conquer an astral nation early you may find find a good mage to empower to give you gateway and lead communions.
In any event they are a fun race to play if you like BURN things!