I've heard GB got a lot better with software updates but wouldn't know. I agree with ForceFlow in that it's design flaws outweigh fun things in the game.
Rather play something else in most cases. Never got into GOTG but to be fair I only played it a few times. In the end, if you are looking for a great Stern pro I would recommend looking a little further unless you can find one of these games real cheap.

For starters, right ramp is prime example of terrible design. Ball goes up, looses momentum, and then drops down like a failed shot on pro. On premium, right ramp is very tight and very difficult. Neither is fun to shoot imo. Inlanes guides badly designed and ball often jumps right over straight to outlanes with no chance of nudging. Pop up targets causes a lot of drains on premium and block shots. The slimer rarely worked right on games I played. More of a opinion but some shots just feel difficult to hit when they shouldn't. Flipper adjustment seems to be very important. I really enjoyed playing GB when it first came out. Love the theme, art, and world under glass. However, the more I played it the more I disliked it. You spend all your time battling the flaws of the game without much reward other than keeping ball alive a few minutes longer. Final nail in coffin was when they put in that random jump scare, scream animation. Maybe there is a good game hiding in there somewhere but done looking.