@JoNty
I think you're right. Retro feeling is one thing - "evolution" with the other platforms is an other. If someone wants OS4, there will be the new motherboards, and for the retrocomputing the old machines are extremely cheap. I see no reason to want the new OS on a Classic Amiga - the performance and knowledge of those hardware elements are enough for the applications of that time... :-)
We must step forward now...
Reynolds