i see a big problem in this.
afaik all nations are alowed to enter neutral towns, except pirates. that would mean that trading and ship building would be nearly impossible for pirates before they managed to capture some important ports, while all other nations could just sail around and buy their stuff.
i know that some ppl around here are just waiting for pirate nerfs, but that would be to much.
here are some more interesting ideas around to balance nation issues like, just to name two examples, the ability to build up (strengthen) ports, or ur mentioned naval bases.
