Seeing as blizz has been cool this xpac with adding more character customization.
I'd like to put a vote forward here, if it could be easily implemented.
To create a glyph or mount equip item that would allow you to use any mount as your chosen "divine steed" (maybe only ground mounts).
This would allow us to match mogs and show off mounts indoor, as the only class who can summon a mount indoors.
Thank You for your time.
P.S. I would personally be happy with the new shadowlands charger mounts being glyph-able (Fallen "Charger" etc).
Please refer me to a thread if this has been mentioned.