Thanks for the quick answers!
So I'll take the Gallerswall and some suitable font for minor settlements.
In the past days I was able to had a quick glance at the pdf you mentioned but I didn't used some of it's advices with this sample. Awesome piece of theorie though.

You are right 290blue, the waterflow isn't that great. I am aware of those misalignments born by my disability of generating real seamless textures. Usually I erase those edges with the clone stamp later on and so they vansih pretty well. There are some of these texture borders on the land as well but I think they can't be seen anymore after adding ground detail.

I'll post any major progress.