"no longer being a tax and being subscription instead"
Because as you know it would have to be much more expensive.
In some ways I do not object to publicly funded broadcasting, most of the costs are fixed which makes it really cheap when spread across a large subscription base. So cheap it is almost trivial or at least considered a bargain. The problem I have with the BBC is it is run by twats who were appointed by twats. We pay for it but get almost no say in what it produces or how it is run.
I would like to see the BBC run by a board of say 10,000 license holders selected at random.