[Baalz]

Early Mid Late
Here's my opinion with notes. - indicates I haven't played that nation recently enough to comment.

Ashdod - - -
Ermor 80 80 70 Weak non cap mages, poor magic diversity
Jotunheim 90 100 100 Giants + B + D + S
Pythium 100 100 100 Good troops, mages & national summons
R'lyeh 50 125 150 Awesome recruit anywhere mages + water defense. Great chaff.
Shinuyama 70 90 80 Lack of shields can be a problem, no astral or blood
Marignon 90 60 70 Weak magic diversity, but angels help end game
Vanheim 100 100 100 Great melee, thugs, combat magic, B+A covers most of the S lack
Mictlan 80 80 80 A bit one dimensional, not as flexible as some
T'ien Chi 70 90 100 Very strong research and great magic diversity
C'tis - - -
Pangaea 80 80 60 Good alteration carries through mid game, lack of diversity hurts
Arcoscephale 60 70 60 Good combat & ritual mages, struggle with mobility
Abysia 70 60 80 Make it through midgame and blood kicks in good
Caelum - - -
Bandar Log 25 45 80 Takes a lot of work to unlock potential
Machaka - - -
Man - - -
Eriu 30 100 0 Raiders + air evo strong midgame, struggles once countered
Ulm 50 70 60 Good recruit anywhere combat mages, struggles with mobility
Oceania 50 20 0 Nowhere to go with research
Atlantis 20 50 60 Recruit anywhere Kings, teleport, acid storm
Agartha 10 60 40 Good recruit anywhere combat mages + good blockers