Honestly this is a really hard question because any game design is very defined by its constraints – if I added something to Fallen London that I couldn't do under its constraints, that thing would be at serious risk of not feeling like Fallen London.
It's also hard to answer because if I say "oh, if I could snap my fingers and make it so I'd do X" I'd be tipping my hand as to things we're actually doing. ;)
Alternate answer: Bite Mr Fires the Full Dive VR Experience