Hello.
I don't know if this has been considered earlier but I think that making a new trait for Lanun and Austrin (something like "Sealord" or "Sailor", "Wind favoured", "Gifted by the winds"...) which would give the "East Winds" promotion to all the ships would somehow flavourize theese civs, in the same way it has been done with dexterous and sinister in fall from heaven 0.40.
I don't know if this has been considered earlier but I think that making a new trait for Lanun and Austrin (something like "Sealord" or "Sailor", "Wind favoured", "Gifted by the winds"...) which would give the "East Winds" promotion to all the ships would somehow flavourize theese civs, in the same way it has been done with dexterous and sinister in fall from heaven 0.40.