If you want open connection maps, just mod a map so every planet has a phase lane to every other planet, it would work in the same way, unless I'm completely mistaking what you're asking for.
I mentioned this elsewhere, but...
This will work as long as there is no hard limit on either total number of phase lanes or a limit on the number of phase lanes that can be connected to a location.
For every location on a fully connected map the number of connections goes up by (n-1). 15 locations has {1+2+3+...+14 =}105 connections / phase lanes. Since maps generally have many more than 15 locations, this # is going to get huge.
Question: If you are playing on a map with a huge # of phase lanes with an AI active (not only human players) is this situation going to induce "analysis paralysis" in the AI?