The Tamashii Stages from Bandai work well with other 6-inch scale figures (I linked Gundam Planet because the ones currently sold in Amazon are more overpriced than usual. Really, Bandai should just churn these out all the time ).
There's also this interesting little set: the Saint Cloth Myth EX Display Stage, which comes with some basic effects parts that, according to the reviews below, you can use on just about any figure close to the 6-inch toy size. I haven't bought one myself to try it out, but pics online with it look pretty good.
I have some Tamashii stages. They're not really what I'm looking for here.
I'd like something that plugged into the feet holes they all have, Preferably single-foot ones for greater poseability.
Something like this, but for 6".
That Bishop has scrawny arms.
A new Bishop? Where did you see that? Damn, I'd love a new Bishop figure. The old one and variant are still really nice, but he needs more figures, and a good story that doesn't assassinate the character, by turning him into a mass-murdering psychopath.
I take it everyone saw that wonderful display from SDCC? With the huge battle, and pretty much every character made.
Did you miss the 3.75 stuff?