[Alpine Joe]

Alright I downloaded this and tried it out and I have to say, wow, beautiful mod. All of the sprites look as good as anything in the base game. The manual is detailed and pretty as well. Having a reference guide to everything is very helpful.

On to balance issues...

the nation feels a bit below average power wise
first off you've got a lack of cavalry or archers. This is a bit of a weakness but not a huge one.
Next, your sacreds. The national troops are nothing special it seems to me, so you will be recruiting mostly sacred troops to fight for you. However in order to be cost effective these troops need some good bless power. I could see f/w on the children being pretty effective, or something like f/d. The rose guard are pretty expensive but have some great qualities. Still significantly worse than good sacred line troops like the jaguar warrior or hellhirding. Which is probably as it should be. I think the big problem with the sacreds is that the children are just too good with a strong bless. At 10 gold you can get a huge amount of attack power on them with just a fire bless. Add that they are stealthy, have a few other useful abilities, and dark power, and you have a very good unit. Overall sacreds are pretty well balanced.

The big problem with this nation is the recruitable mages.

First off, you are supposed to be a blood nation but your cheapest blood hunter weighs in at 120 gold. That's a lot, even if it is sacred. They can reanimate too, but not very well. The H2 version is a whopping 280 gold! You are paying almost as much for him as a Bakemono sorcerer. With two magic paths and only two holy, he is too expensive in my opinion. The vanjarl costs the same amount, has better magic, and comes with glamour and thuggability. And isn't even a particularly spectacular mage.

Necromancers, on the other hand, are a great unit. The forge bonus will mean hammers+mentors for great research. They also have a lot of base research. A pretty costly unit, but worth the price even without being sacred. Lets you take drain 2 pretty reliably.

Black rose lord looks like a decent thug chassis but is pretty costly and you aren't going to find many things to do with that death point. Maybe give him two?

Dark summoner: This guy is a good unit but he is way way too expensive. He comes with only 7 magic paths and has at most level 3 access. He could be a decent thug but is simply too expensive for what you get. He isn't even sacred so upkeep is absolutely brutal. You will recruit this guy only for path access, as keeping him around with the unrest he creates and his upkeep is just not affordable, even with great scales, which you probably won't have. The magic diversity is great but its too unreliable and you simply won't be able to afford having 10 of these guys around before the mid game. He is a horribly ineffecient researcher. It seems a shame to make him so expensive. In my opinion he should be either sacred, or have his cost reduced to 450 or 400, taking some of the sting out of upkeep.

Lastly, the heroes are detailed and varied but they need to be better to give some incentive to take a luck scale with these guys. Nothing on the list really stands out except the holy 3 guy and even then its not worth spending for luck scales.

The biggest problem with this nation seems to me to be that they aren't really good at anything. You can reanimate but ermor puts you to shame. You can blood hunt, but not nearly as efficiently as lanka/mictlan. You have good sacred troops but nothing top flight, and you can't recruit a divine blesser.

Overall great job on the mod, one of my favorites. Its probably better to err on the side of being too weak, but i think this nation could use a bit of a boost, my recomendation would be giving the H2 guys 2B as well, reducing the H1 guys to 100 gold, giving the summoners 3B and making them cost 450, and improving the magic on some of the heroes.
Lastly, the blood monolith is terrible, you can get a blood fountain with death and blood for cheaper. I would recommend making its base cost 0 and giving it D2, then it might be usable. Vampire king also seems a little too expensive, at least compared to CBM queen. Maybe make him 100 points? or lower the new path cost?

Sorry about wall of text, i hope some of it is helpful.