How about ghost ships with skeleton and undead crew members that give drops they could be in Fel as well!
Ghost ships with undead on it would be really cool.
I picture it looking ghostly too. Maybe it looks damaged/weathered. Sails are torn etc. Maybe it could be set up where you can eventually own one by putting pieces together like the orc ship.
My suggestion for a -20% spell damage magical undead ride for Trammel only.
Most of the time death occurs due to spell damage because we can't run fast enough.
Adding this to fel for pvp - I can foresaw a massive debate as it changes the equation for mages. So leave it out of Fel for now.