What about having somebody coat your emulsion for you?
I'd like to see a high-speed B&W film, like 3200. Ilford will custom cut their roll film, like Delta 3200, into 4x5 or 8x10 sizes, but for one person the cost is too much and the quantity is too huge.
IR like HIE takes special dyes, and so far nobody has come up with a real substitute. All current products currently fall short.
The New55 project is actually ready to move into production, but I'm sure they'd still appreciate help.