I've become way more picky, rather than full sets or games for every single system, I just stick to collecting as I go. Grabbing the big AAA games as they come out, and grabbing other stuff i'm interested in once they drop in price. Ideally i'd love to have only a shelf or two packed with the best of the best. I do prioritize some franchises too, i'll always buy every Dragon Quest and Zelda game that I can, for example, almost collections within a collection.
There's just too many damn games coming out lately to be able to play them all, so I gotta have a bit of patience and control over my wallet.