The setting I'm working on both heightens some aspects of the Points of Light (or as I put it, lights in the darkness, or candles flickering in the night, which both sound less modern to me) and downplays others.
4e makes me alternately want to color in the pages of the world they describe, tear some pages out of the coloring book, and add in some others. I like basic concepts, but dislike some of the ways they've integrated a specific default assumptions into the world.
For instance, I liked the idea of the Tieflings' new origins, but felt that they didn't really follow through on it. It's like they had this cool idea to turn them into a race that once ruled half the civilized world, and that brought about its own fall from grace, and then took it to a place where the remaining history looks like it was penciled in by an emo teenager with them hanging out in the alleys and slums of human towns with names like "Chant" and "Despair".
So there are good ideas, but I feel like they pulled back from them a bit too much to bring it back down to the traditional generic D&D world.
I really never cared for the D&D pantheons or gods. I'm trying to go with something that has more unified religions within racial groups. The gods of Forgotten Realms, Greyhawk, default D&D, etc just feel like random collections of beings to me. I have a hard time imagining a fantasy medieval setting where many of these religions, even good-aligned religions, coexist alongside each other so easily. I suppose it has to do with having "proof" that all of these gods exist, but that's another thing I never really liked, either. To me, proof denies the possibility of faith. It becomes as academic as arcane magic.
So I was glad that they took out the one irksome aspect of divine magic, which was that a divine powered character had the ongoing endorsement of their god, and that there's now a sort of ordination ritual where divine power is imbued in a character up front. But then they left in a lot of the same flavor with gods as before.
So I guess that 4e isn't so much convincing me to mix-and-match, as the original poster seems to be saying, so much as it's driving me to answer my own questions about the concepts they introduce and become more specific about some things while scrapping others, drawing a line under some aspects of PoL while drawing a line through others.