Mass aside, my investigations have taught me that contact area is important. This is very much a function of the connectors you use as well as the configuration of the binding posts themselves. It's why I prefer spades.
bigger posts=better sound?
Broke off one of the posts on my Dahlquist 10s while moving stuff around so I replaced it with a new gold-played wider (in diameter) post and it seems a lot more “open”. The originals were old (obviously) and nickel. I had to snip the connection inside to make it fit around the new post. Haven’t done the second speaker yet... but before I do, am I crazy?