It occurs to me that a special mission on an r8 or r9 planet would probably work better than an Assault battle. It would allow guilds with significant r8/r9 development to support worthy players who aren't there yet -- much like right now you don't have to have r9s to earn Droid Brains in TW. Even better might be waiting until a bonus planet is opened, and then have the big bonus for that planet be Electriums instead of Kyros? Or Electriums for the first star, Droid Brains for the 2nd? Or Electriums on the bonus planet and add Droid Brains to the rewards for guilds getting X stars and up? 30? 35? 40? 45 stars as the minimum needed for Droid Brains would seem high to me, but I'm not trying to dictate a specific policy, just offer ideas for discussion.