I’m failing to see the issue here.
People have already gone and set up new Trade Hubs without “approval” from CCP. The biggest one that I can remember is the Venal Prosperity Network: [VPN] Official Venal Prosperity Network thread which was entirely player created and now operates a fairly healthy trade hub in Venal due to the community support.
What’s stopping you from the doing the same?
Do you actually care about establishing new trade hubs, or are you just mad that you can’t anchor citadels in those 4 systems? Because I don’t know why you’d even need to anchor structures to establish a new trade hub in the very system that a trade hub already exists in.