These all seem like pretty cool changes. I think that it'll be really interesting to see the basic routes for trade and travel switching up so majorly as they are.
IIRC, doesn't Liberty already connect to the Sigmas? I've checked FLcompanion, and Ellesmere currently has a connection to Sigma-59. All that's really changing is those two systems are getting deguarded and perhaps gaining a few more jump links...but, regardless, the presence of new paths around Sirius is a pretty cool idea, and one I support fairly whole-heartedly.
None of these seem like they're going to be instant easy paths for traders, either. I imagine trade lanes will still be the safer (and perhaps even faster) bet.
