Ginnel
Explorer
Planescape all the way, I collected the old box sets and books from ye olde auction site and they're happily staring at me now daring me to continue running in 4th edition.
They could change quite a lot of it for all I care, but you have to get the feeling right of political intrigue and common extroidinary day to day sights, as well as the attitude.
I would be quite happy for the elemental planes to be all in one as the 4th edition cannon, with certain sections being dominated by a particular element, city of brass etc. portalling around the astral sea could work very similar to going across the planes themselves, although I'd probably have mechanacus and archeron as a seperate plane/s.
They could change quite a lot of it for all I care, but you have to get the feeling right of political intrigue and common extroidinary day to day sights, as well as the attitude.
I would be quite happy for the elemental planes to be all in one as the 4th edition cannon, with certain sections being dominated by a particular element, city of brass etc. portalling around the astral sea could work very similar to going across the planes themselves, although I'd probably have mechanacus and archeron as a seperate plane/s.