Heads up. I am Rear Admiral 3 and I got a First Contact mission in the B'Tran Cluster. I have JUST completed the Klingon arc so I was unable to use the Transwarp hub because of being locked into the story. So I have a wasted First Contact.
I've had problems were both the First contact and the normal diplomatic missions were both B'Tran, also you need to use the transwarp to complete the around the galaxy... nice to have an event that you can't complete without having access to the borg missions, which means finishing the Klingon, Romulan, AND cardassian lines.
But yes, they need to open up Transwarp to everyone lvl 41+ or so if they are going to give us B'tran missions
I understand the mission progression but I think we should be able to start on the next arc when we hit the level requirement IF we want to. At this point, I am still on my first "true" mission on the Romulan campaign.
If there is any feedback I can give during this beta process that is a negative, this would be one.