Why is Han Solo not wearing a spacesuit in a vacuum?
Same reason he didn’t need one in ESB I’d imagine.
The dreadnought doesn’t really seem that big. It really hearkens back to the old Star Wars Marvel comics and Crimson Jack’s Star Destroyer.
I’ve always wondered what that hole in the middle of the Star Destroyer was supposed to be. Infantino didn’t exactly shy away from artistic license when it came to SW designs (he seemed to prefer aesthetically interesting over logical), but I’ve always found that giant hole to be somewhat odder than usual (he usually drew the space-ships pretty accurately).