I don't know how difficult it is to meet the Greek criteria but if they were to consider changing it, surely it would require massive resources to put it into practice.
Apologies for the arms bit, not my usual type of arguments, had an overwhelming urge to include a cause/effect statement
I shouldn't say this because it's a bit like shaking a wasp's nest, but I wasn't really thinking about the UK because I'm assuming we'll have left anyway.
Whoops, well, that's a bit Brexit-thready anyway.