OpenSeaMap does not look ready for production. I get tons of broken
tiles there. We'd have to host the tiles ourselves.
To be honest I do not think that it is a good idea to start hosting
tons of different tilesets, just because they are there.
I'd start of with the bare minimum and focus on what is important for
encyclopedic applications. The location of shipping lanes and
individual marker buoys (or whatever those are called) does not strike
me as information that i terribly relevant for our average reader.
That being said, we should definitely have this discussion once we
have an initial setup deployed. THEN we can gather feedback from the
users and think about broadening our map offers.
Daniel