Multipe visible squadron tags is a legitimate concern, but that could be addressed by choosing to assign only one of your sqaudron tags to your transponder. So if you're out fighting for Lavigny's Legion or whatever, that's what you show up as. No need to advertise to others that you're also a Fuel Rat and a member of Canonn (but all of your squadron affiliations will be visble to other squadron members on the appropriate membership tables).
But unless something is done about this, there will never be a carrier in deep space for Fuel Rats to operate from (unless enough of them refuse to join Canonn etc). Nor will there ever be a Distant Worlds carrier, or another Gnosis, except by FDev "special decree" (and squadron comms would be useful to such groups too, it's not just about the carriers). Even if a group has NO restrictive policy on membership of other groups, they will be forced to implement such a policy.
NO!!!