Generally, new IPs, ideally by my favorite directors and/or development studios. In most cases, games directed by certain directors have original ideas to spruce up tried and true gameplay formulas...or even invent new genres entirely! Also, they (the new IP games by my fav. directors and/ or dev. teams) usually have "signature elements" to them that make said new IP games feel connected to one another without even being in the same series or universe (in some cases, these signature elements CAN even imply or straight up confirm that two new IP games are indeed set in the same universe, like Viewtiful Joe and The Wonderful 101). This satisfies nostalgic tendencies while not putting excessive pressure on my fav. directors and/or dev. studios to live up to my (super high) expectations for sequels, which brings me to my next point about sequels...
I've been burned many times by sequels...got jaded on sequels overall (there are several exceptions of course!) that don't feel like the games they're sequels to in a bad way...more often than not, I end up missing things removed in sequels that were present in their precessdors, or miss the atmosphere and/or graphical style of the first game rather than the sequels'...to me, two new IP games directed by the same director, while having (for the most part) unconnected stories and gameplay, can feel more to me like true sequels because of the signature elements infused by the director link the two games together rather than two sequels in the same series (either by two different dev teams[there is 1 exception I can think of that two sequels in the same series made by different dev.s feel similar enough to eachother while also feeling unique from eachother] or by the same developer).