Instead of focusing on Planes that exist, and that you can look up info about on the internet in like five seconds, a DM toolkit of planar traits and ideas for creating new Planes to explore would be better. Make the game like Frederik Pohl's Gateway, where players are constantly rolling the dice to find something new and exciting.
Examples:
"A wasteland of red sands under a magenta sky, with cyclopean ruins of a long-dead civilization."
"A world of endless stairwells and landings, like an M.C. Escher drawing."
"A plane where time runs backwards, and the characters must escape quickly or be transformed into helpless children, or even be erased from existence, with no one remembering they lived at all."
"A world of immense giants, where the characters are the size of toys."
"A realm of colorless fire, lit by a sun that radiates cold not heat, and the strange inhabitants that live there."
"A two dimensional world inhabited by two dimensional beings."