Hey, thanks for your message!
As far as I tested it, it is compatible with MV3D. If you find any issues, let me know to fix them. The compatibility with MV3D is a decent selling point, so I always ensure it works fine.
Yes, everything you describe is already supported by my Plugin. You can try out my Sample Snow Forest directly in your Browser here: Play Online – Aerosys' Blog. It contains 3 random Maps, and then the Player is transferred to the next Area.
Don't forget there's a free demo in which you can try out almost every feature to check if it fits your needs!