I think it'd be awesome to have ariship pvp battles between guilds. Not just within a ship, but between ships. Ships would pull up along side of each other for boarding, people would shoot and cast spells across the gap, people could fall off, it would be all sorts of fun.
Also there could even possibly be great ideas like, options at the helm where the ship could be slowed, sped up, or turned in combat. Perhaps new armor plating and weapon eplacement ameneties like rail crossbows, ballistae, small catapults, or mini cannons. And if we want to go really wild the ships themselves could be given health bars and armor. The repair skill would be useful in combat for fixing the ship and like normal pvp, some things like firewall or other spells either wouldn't be allowed or could harm the people on deck but not the ship itself. Ships could lose speed and maneuverability based on damage, tons of other fun stuff.
There are dozens of other ideas that could go into this, and for those who love pvp, this would be a whole new dimension to it! Inter ship capture the flag for starters would be sweet.
Let me know what yall think.