I see two possible scenarios:
1. They won't be. Instead, existing glyphs will become increasingly overloaded with new meanings.
2. New glyphs will start their life as icons. Once a certain icon becomes wide spread, it may be made into a code point with a glyph.
In practice, it would probably be some combination of the two.
I see two possible scenarios:
1. They won't be. Instead, existing glyphs will become increasingly overloaded with new meanings.
2. New glyphs will start their life as icons. Once a certain icon becomes wide spread, it may be made into a code point with a glyph.
In practice, it would probably be some combination of the two.