I cant help but feel Galaxy 2 was excluded because they never want thier audience to hold all thier platformers to that standard because it was so good. It literally is flawless. I think like my only complaint was you cant use the powers in the tiny hub area and the boo hat is a bit underwhelming (I think you use it twice?).It's crazy that they excluded it from the Mario 3D All-Stars collection..
I'm hoping we see it in some capacity during the 40th Anniversary celebration.