I really would like to (not for me personally) see the functionality of clone planets being introduced.
You should be able to have as many planets as you want on the proviso they are paid for, noted as being linked to your main account, do not enter the "main" universe and we have galaxies for pure clone planets which can still be attacked.
Denying people this just breeds the behaviour of people signing up a load of accounts that are exiled around the universe and it makes it hard to create a galaxy with genuine planets.
1. It reduces the fake planets being integrated with main planets
2. It creates revenue for the game
3. It allows current cheaters to fulfil their appetite of having 10 planets