I've mostly played the primary version first - initially just out of luck that my mum bought me Diamond (blue > pink as I'm male, most likely), then because I liked Reshiram (then B2 as its a direct sequel) and Zacian. Although I bought both, I played Violet first because I liked the look of the legendary more (its a dragon that turns into a Light Cycle and a Jet!), I liked the colour purple more than orange (Pokémon Orange just doesn't sound good, and Miraidon would look bad in it, so I get why they went for Scarlet), and although I tried to avoid most of the news given it was going to take something seismic for me to not buy a main series Pokémon game (if they ever go VR I'm done), Iron Valiant looks amazing.
But I probably count as a more nostalgic player - I hate Exp All and affection bonuses as they make the game far too easy for me, don't really play online much other than to battle (if they stop making the 7-star raids have the Mightiest Mark, or if they repeat themselves, I'll stop raiding), and am strongly against using Mints rather than resetting for a nature (Bottle Caps I begrudgingly accept for competitive battling as everyone else will be using them). So in that way I'm probably more of a nostalgia-focussed person. But I chose Violet and would choose it again.