[Hadrian_II]

I took a short look at the 2 mod nations, and i dont think they are weak:

Vaettiheim:

Strengths
9 gold Archers
Trolls Recruitable everywhere
Easy Access to Nature, Death, Astral and Blood Magic and Earth Magic is also Possible Blood + Earch = Blood Stones
Wolf Trolls could be painful with a strong bless also the Troll Mages have some thug potential.

Weaknesses
No medium infantry
Strong Mages are Capital only
Most Mages are old Age
No Battle Magic (Air or Fire)

I would say they are balanced

Ulm Reborn

Strenghts
Heavy Armoured
Sacreds that are Recruitable everywhere + H3 Priests means that bless strategies would be easily possible
Sacred Commanders With Fear + Awe Strong armor and 30 HP --> this is what i would call an ideal thug chassis
Sneaking Priests

Weaknesses
Very Resource Intensive
Rotten Magic only mage is capital only, acces limited to Earth and Astral
Problems With encumbrance and magic resistance

I would consider this nation rather weak, but i cant judge the sacreds, also the Neugeboren Lords have some serious potential.

I would say that Ulm and Vaettiheim wont pose much problems with the balance.