What a bummer, game looks to be in nice condition otherwise. I once bought a game with an added center post mod consisting of a screwed-in rubber footer from a piece of equipment. Not only did it look butt-ugly it also had the typical cone shape, which meant you were guaranteed a nasty airball anytime the ball hit it at virtually any speed higher than passively rolling!
The outlane screws can be removed, the holes filled, and someone with a little skill could do at least a passable job touching up the paint.
It looks like the center screw might have borked the insert (hard to see clearly in the pic), which will require a lot more effort to correct unfortunately.