Re:Hakkapeliitta cost
I intentionally chose the weapons and armor of the Hakkapeliitta so that the equipment would cost as little as possible. Centaur Warriors and Vanir are way better, and even cheaper in resources. The weak armor is risky in longer battles, or against massed archers.
I originally had them at knight stats (12 hp/str/att/def), but that'd make them too expensive - they die quite easily against tough enemies. So I toned down hp, str and att, and lowered the gcost by 10. That might've been a bit too much, but I don't think it should be raised by more few gp.
About spellsongs and national spells:
Inspiration for these effects came from here:
http://en.wikipedia.org/wiki/Tonttu
Spellsong of the Forest People, N3 ritual, conj 2
Contacts Tapio, King of the Forest, and summons his servants (sacred bears? bears with tough hide similar to kithaironic lions?)
Spellsong of the Mountain People, E2N1 ritual, conj 3
Contacts and summons a Gnome, E2N2 stealthy mage with glamour
Spellsong of the Water People, W2N1 ritual, conj 4
Contacts Ahti, King of the Waters, and summons a Näkki. It is a strange creature that resembles a shambler and has W2, 2xWDN magic.
Spellsong of the Grave People, N1D1, Thaum 1
Combat spell that causes disease in AoE 1.
Spellsong of the Wood People, N2, Alt 2
Precision boost in AoE 5+ near the caster (the wood people help the arrows to fly straight)
Spellsong of the Steel People, N1E1, Evoc 3
Heals damage (the steel people take back the wounds they have caused). I'm not sure whether I'd like to have it be like Song of Healing or Healing Light.
If it was possible to create a spell that removes disease but not other afflictions, I would make that one as a Spellsong of the Fire people, N2 ritual.
I'm thinking the mages could be like this:
Witch: sacred, E1N1 for 100 gp
Wiseman: sacred, N1H1, 100%WEDN for 120 gp
Spellsinger: E1N2, 100%EN, 210%WEDN, for 240 gp
summons at Conj 3:
Näkki, W2, 200%WEDN
Gnome, E2N2
As you can see, I decided Nature was better for the Spellsingers. I'd still like to add a Sami-inspired Shaman, perhaps as a N2, H1 stealthy capital-only mage.