Thank you! You awoke me to the fact that I left some things out (first time texting on an iPad).
Why not do as you propose? Because we’re improving on existing 3-way switching.
Why not use a different product? Because we already have a pair of Lutron Maestro MS-OPS2H and a couple of 4 ft fluorescents (I hadn’t even thought about that!). Now I need to go look up 2 A ballasts....
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw