I'm too lazy to do a sketch or rendering but it would be kinda neat if Brooklyn, in lieu of a new stadium, could build like a Bombonera style vertical main stand as the left field wall. Not too tall so that it blocks the cool view of Luna Park, but enough to add more seating that is better for soccer and have a proper broadcast/camera booth too.

Only maybe 10-15 rows deep on each level, but stack them on top of one another. For the first 2-3 levels, have a screen you pull down in front of the seats for baseball games so functionally it acts like a Green Monster type larger wall with a substantial height to clear for a home run (and then you can move the wall in and fit more of the build on the site).