No it wouldn't break anything for you. The point is, is it would give you a new option, you
don't have to use it. It would be used essentially for listening for the aliases, if you recall
an alias is still just a callsign, I used G4KLX for illustration, but it would probably be:
[ZURICH-$ VIA 144]
to allow connects to ZURICH-0 through to ZURICH-15. Since $ is not a valid SSID I
don't see it could break any existing configs.
Jonathan HB9/G4KLX in Zurich, by the way.