Yeah, I still have many cards I don't have yet from the older boxes....none of them are staples in my case, thankfully. Just certain cards for fun projects like Blackwing cards for BW deck, Jurrac Guaiba for Jurrac deck, and the old Ritual support cards.
I have staples to hunt down too but I'm worried about going for a 3rd Canadia in case it gets limited. Like I already have 2 so I'm a little angsty about that.
The same thing could go for Floodgate Trap Hole or even Wall of Disruption. So although getting 2 or 3 copies of those UR/SR cards isn't bad I'm worried they might get hit (even if UR's have never been hit)