I gave it a 7 (but that's in no means a slight), but I tend to grade these sort of questions on a curve and if I have 5 or so consoles above it then it's hard for me to justify giving out so many 10's if I make this a 9.
But there's a ton to love here. Library is amazing, hardware is durable, 6 button controller is one of the best ever, and it does rgb out of the box. Even the much maligned sound capabilities are something I enjoy because even thought it isn't good, it's unmistakably Genesis. Just typing this I can hear that throaty base sound that's made during every explosion in every game, and that uniqueness has been completely lost these last few generations.