Some questions - most about Sweboz

[Miles Sueborum]

And to conquer Gotland I need scandinavian ships?
Understood ^^

But I have another question concerning Sweboz religious buildings...
It seems to me that only two of them are sensible choices - Tiwaz grants good bonuses to your troops, while Fraujon increases your population...
Do the other shrines' expansions grant any great bonuses - or is there another reason for building other shrines like that for Wodanaz?