So we all know that the dreadnaught is really fun to explore with all the puzzles and crawl spaces. It would be awesome to explore more of the dreadnaught, but it would be so tedious and slow to get around without fast transportation, so here's how it would work:
You summon a tombship and a few enemies spawn out of the ship and you kill them. After that, you can board the ship and go to any part of the dreadnaught you want, some areas may only be accessible through tombships too.