You're aware that putting sailing on non-commanders doesn't do anything
?
Delvers (specifically, Delver Armor) need to cost more resources - compare to an Ulm unit. You could reduce their cold cost, if you wish.
Perhaps the longbeard should be old?
You're going to be fielding a craptons-of-crap strategy as this nation, that being the biggest benefit of units that cost so few resources - consider making all of them slightly cheaper to compensate for the fact that none of them wear armor.