I never played Blue, but played 'Pokemon LeafGreen' on Emulator (that was before I knew how bad piracy is). yeah... It's a great game!! and one of the games that I know I'll enjoy if I replayed it now~
Pokemon is one of my favorite games so much that I bought a 2DS and paid full price for Pokemon moon (I mainly PC game and only buy from Bundles and sales).
By the way, I really love Pokemon moon!!
leaf green is basically a better looking pokemon blue, a classic for sure. I haven't played a new pokemon game in a few years. Hoping they release some sort of open concept pokemon game for the nintendo switch!