Lol you’re breaking my brain with all these questions. I say just go with whatever you want. If you had every ds game cart only, well you’d have a complete set. It just wouldn’t be with the boxes and manuals. Lots of people collect for the NES and SNES this way when they go for full sets. I would definitely consider your DS collection complete if you had all the games cases and manuals but were missing some of the add ons like big boxes, styluses, toy add ins, posters, stickers, etc.