Iām still sad Shibuya 109 was removed from Unicode, that place is iconic.
It would be nice if we could scale Unicode and let everyone have their own emoji, but we can't scale it. Think about the volumes of text that have been written over whether the gun emoji should be a handgun or a squirt gun. Now repeat that for every notable place and company in the world... and it's just not something humanity can achieve.
What we need is extensible unicode. Some way of marking up documents to say "here is the URL that defines these characters", and then people could install the "New York City emoji pack" and be able to use the Empire State Building or Grand Central Terminal in addition to Shibuya 109 or Tokyo Tower. I guess HTML is that markup language, and it turns out that you can put whatever images in the text you want. It was probably a mistake to standardize Softbank's picture SMS crap, but here we are.
I'd say the closest thing we have to a logo for everyone is in the Private Use Area plane, https://fontawesome.io