>>12059652
>bomb this secret spot to get a bajillion extra points
Not really a real issue. Magazines and word of mouth were a thing back then and you could watch other players find these spots in the real arcade. Now is it a bad game design? No. The game encourages you to bomb A LOT and it's even good for survival runs, since destroying certain spots cause enemies not to spawn (stage 4 and 6).
>Also half the characters are locked behind the Konami code
I honestly consider it a bad game design for the original arcade release, but it was solved a long time ago with emulation/save state and Zakk's patch and most recently with the 2016 port qol features. Not sure how it works in the Saturn version tho.