Can I suggest something regarding Corsairs (since they are the other core unit we have that really need some work)?
I have a few ideas as to how to make them useful without pushing them into special.
- Remove light armor, giving them just kraken hide
- Increase movement to 6"/12"
- Increase Str to 4
- 2 units with vanguard for each Fleet Commander
Give em ambush, its fluffy, it fits.