Would be interesting if NPC could be skirmished as well.

What's the point to skirmish a NPC?

That would require a set of AI's with fleets that would require them to have fleets that can be targeted for voodoo I would think, then that could mean that voodoo such as Fugitive and hostile natives could be used against NPC's instead of the playerbase

The point would be using skirmishes points vs NPC.

On a second note, would be interesting if Metallurgy, Gunpowder, Spanish Galleons could work against NPC too.

Just a though. If a player prefer to attack NPC, why not giving him/her the same bonuses in Round Shots, Iron Scantling and Hull Points?
As I said, it's just a though.

Nothing to see here....