People complained that Hardline was too much like battlefield 4. Too much cut and paste.
I'm theorizing that DICE is likely to respond to this criticism by making lots of changes with battlefront over other battlefield games. To the point whereby traditional battlefield fans may not actually like them as they seek to create something very different from battlefield 4.
In case they end up getting accused of creating a "star wars mod" battlefield like the way that Hardline was accused of being a "cops and robbers mod" for battlefield 4. The 40 player limit is a case in point. People in denial already saying that DICE would only set it at 40 players because of consoles, not actually anticipating that DICE aren't creating another battlefield game here. Just because something was a certain way in BF4, doesn't mean it will be the same in Battlefront.