It's not that hard/time consuming to do this, there are only a few low-level ships anyway and changing NPC loadouts/ships doesn't take very long either. Changing mission level would take some time, but that's not needed on the start.
Reason why this wasn't done yet was to make it easier for new players.
But right now there are very good reasons against that:
a) with the new stats on starting ships (above all the Rhino) and the mining possibilities in Pennsylvania it's now very easy to get first 1 mil when starting from scratch. (I did this recently myself to test it). For 1 mil you can buy some MK II HFs which are more than enough to survive/work in an enviroment similar to Rheinland
b) with Pennsylvania system most real newbies that "need" protection are there
So in first step I'd say it should be no problem to change NPCs/ships etc in Bretonia and Kusari to Rheinland level. - Rheinland NPC level is kinda optimal for house space imo, NPCs are not useless, but they are not a big factor either.
Next step could be most of liberty bare pennsylvania. Optionally rest of liberty can be changed to something like current Bretonia or Kusari level.
But this is not only for me to decide. If community as well as most of the developers like it, we could do this.
Igiss says: Martin, you give them a finger, they bite off your arm.