Am I getting carried away?
Only with the thought that anything might actually happen
It is great to campaign for more expenditure on ATC infrastructure, but the fact is that ATC is now (in the UK) an almost exclusively commercial matter, and I cannot see NATS and SERCO tripping over each other to bid to invest in control systems and controllers to handle what will be almost exclusively non-paying users (because they are below 2T).
If you impose charges on all IFR flights (of whatever weight) you will find that the majority do as I do and fly in such a way as to mitigate or eliminate charges (in your model that will mean below FL50) thus reducing any income to the service provider.
Will