I noticed when blowing the whistle in the 2nd quest when having the triforce it takes you to each completed level in the 1st quest. Like if I finished level 5 in the 2nd quest it takes me to where level 5 was in the 1st quest instead of level 4 from the NES version. I still think it is an original idea though. This was in all 2.5.1 builds I have played.