This go-round, I'm going to buy the games that *interest me as soon as they come out, and pre-order the ones with cool pre-order bonuses.
I'll buy the Consoles and Handhelds only after they get a nice price drop, and a hardware revision, a few years down the line, but only for the ones I have purchased games for.
I Really Wish I had done this during the current gen, because I only have:
Two Wii-Exclusive Games,
Two PS3-Exclusive Games,
Three 360-Exclusive games.
*JRPGs (including Ys), some Zeldas, some of the Marios, some Sonics, some Metroids, and so on.
Forgot to mention Castlevania (SotN Style) games, (however, it does have many similarities to the early Metroid games) but I'm not sure if they'll be making any more like that; maybe for Vita and/or 3DS?