Well, after our post-Christmas shopping, I own fully half of our Wii game library, with two shmups (Blast Works and Castle of Shikigami III), a fighter (Tatsunoko vs. Capcom), and a rhythm game (Samba de Amigo). So I've pretty much dealt with that problem before it really began. And my sister bought Rune Factory Frontier, so at least one of my siblings is doing things right.
(She also wants to play Mushihime-sama now that she has a working PS2 again. That alone makes up for everything else.)