Nodes are not important, it's the miners that matter. You can spin up all the nodes you want and change anything you want with them. Unless the miners see and then mine the transactions that those nodes provide it does not matter. AND THEY WILL NOT MINE THEM since they would not be valid transactions on the network so the miners nodes would reject them. Period. Full stop.

There is zero reason to change the way BTC works. It is functioning with no issues. If you want to fork off and make an altcoin, that is fine. If you come up with a better way of doing it, people will follow. If not, then they will not.

-Dave