I don't think it's fair to call anyone at Stern 'lazy' on this game. It's super painfully obvious that the license was a huge pain in the ass to work with. 10 songs alone says it all, even before you look at the Premium art package, or realize the slingshot plastics are just gradients because someone probably couldn't get a design on them approved. I sympathize with whoever did the art, I'm sure it was frustrating and they had better ideas that were shot down.
It is what it is, Stern could have said "You know what? We'll pass on this game, you guys are busting our balls to the point where we can't do good work", but then you'd have no Led Zeppelin pin. I hope the people who buy it enjoy it. As we often say, you don't play the cabinet art.
10 songs though, even though they picked great ones imo, that hurts. You're gonna get tired of them faster with that few.
Personally I think that with all the bands in the world it would be smart to skip the ball breakers, and just work with the ones who actually want a pinball. I haven't played GNR, I have no idea if it's any fun, but it's just amazingly obvious even without knowing the Slash story that there were no uphill fights to get that game looking and sounding right.
Surely there are lots of popular bands (popular enough to sell a few thousand games isn't the highest bar to cross really) that would be stoked to be immortalized in a pinball and wouldn't send their lawyers to quibble over everything. If I was in a rock and roll band and Stern came calling I'd be asking them if they could fit MORE songs in the game, and sending over my favorite artist to do the packages. Maybe that's just me, but there have to be other musicians with that kind of spirt.