[Humakty]

I don't understand why Late ulm had so many votes for weakest.Do you have a problem with persons drenching their thirst with the blood of...hurm, no nothin' to say..
As for Lanka, I think that a wise player should go for the less rapid, but more reliable Kala-Mukha.
They have a good access to many paths.
Their only pbm is the fact everyone knows they are powerful, and that having 9F/9W on your god doesn't make for a great late game.(but maybe some people tried without?)
A big pbm with demons/undead is that by playing with a lot of them, you make your ennemy rentabilize is priests.(who are quite useless on the battlefield,apart from bless).I can imagine a ctis player would laugth a lot against a demon/undead storm.
As a rule of thumb, when you discover a good combo in this game, be prepared to the counter a 'minor' civ might have.