Not a big deal atm, but I wanted to mention it before I forget. I started a new game as the Magnar and in the Design window the Peasant design you start with only has 1 Movement. The Pioneer correctly has 2. New units also have 2.
Also I'm not sure if it's intentional or not, but the Magnar Pioneer has a club, which makes it cost quite a bit more than a Human (any of the Kingdom races) Pioneer.