Also, General Dodonna is around on Echo Base, unlike in the final draft, where he disappears from the story. But all that exposition about the state of the Rebellion, if included, is probably something that should be summarized in the opening crawl.
The love triangle between Han, Leia and Luke is, uh, a little strange and unsettling, to say the least, given what we saw on the actual screen and since.
I’d say the love triangle is still there in the final version - most notably in the scene in the medical bay where Leia kisses Luke to embarrass Han. But in the final version, the love triangle was serendipitously downplayed apart from that one scene. Notably, there’s almost nothing left of Luke’s romantic feelings for Leia.