Public room City – manual instance selector

It is obvious that there are several instances of each public city of NY and ASD.
When one of these are filled with around 40 ppl or so, a new instance is being created and players entering said area are placed here.

This is rather annoying when you made an appointment with your friends to meet up there and some get into room #1 but the rest is bumped into room #2.

Would it be possible to include a mechanism to set your preference into which instance your being placed?

I could imagine a system where after selecting the public area you want, you get to choose which instance you want to enter.
Something like this perhaps:

When selecting the City you want to enter, a dialog pops up with a list of instances, the number of players already in that instance, and an ‘Enter’ button only if there is room to enter.

Do you guys think this could be helpfull?