We know a lot of people are bored and quiting because there is nothing to do.

A second galaxy where every one would start with a clean slate (holding their original ship in the first galaxy) would give people a lot to do , everyone rank 1 , no rank 5+ bases to pull you
Lots of effort to become strong again.
Admit it , those who start now get in a rank 5-7 base at the day they join.. no effort there

How? : a mission that unlocks at xx rank , something like 50,
just like the GTC-leaderboard etc just so not every newb joins right away
Probably 2 mission, one that announces it and costs a LOT of energy
and the second that costs pretty much nothing and only requires one click to complete , sending you to the different world (so everyone gets pretty much a fair chance)

Why a lot of energy? so the people that are just bored and think "hmm lets check it out" without even playing for a couple of days dont join


(its pretty much how 99% of the games use "worlds" or "realms")

been suggested many times, I still like it. but you put a twist on it to keep newbies keep coming into the original server so it doesn't die. so even better. and everyone who goes to the new server gets a fresh start and actualy has a chance to be at the top. so + 99999