I'd actually say I've got more nostalgia for Ash than Red honestly.
Probably because, you know, Ash was an actual character I recognized, while Red (or Brain...the misspelling of Brian) was just the character I played as who was me. Seeing Red in GS was cool, but I really can't say that the character was that memorable to me.
I wish they would've gone with the classic designs instead of the FR/LG-era designs. I barely recognized this dude as Red when I first saw him, Ash looks more like what people see Red as than this guy.