I think there should definitely be some things that appear significant but aren't. On paper it just sounds like bad game design, but... that door in Grunty's transformation room I mean come on!
There should also be an ice-key-tier item of hard-to-obtainness, only it should be obtainable without codes
or the codes should be discoverable and not debug type stuff (CHEATNOWYOUCANSEEANICEICEKEYWHICHYOUCANHAVEFORFREE)...
Make the forum great again.