I phrased it rather crudely. I really meant "when there is no more to add". With the caveat that running out is the other option. I think the question represen

I phrased it rather crudely. I really meant "when there is no more to add". With the caveat that running out is the other option. I think the question represents an equally terrible mindset, "when do we stop?" How can I answer that, honestly? Is there a number? Or is it when a certain date has come and gone? How do we pick that number? Or that date? Why do we need to stop? I understand why we might want to rate-limit the adoption of new glyphs, but I don't see why we'd ever draw a line in the sand and say, "Ok, now it's frozen." Imagine if that had happened before the creation of the Euro as a currency.