I'd like to put more golden roids into the universe... It's nice but one construction roid on a very very big planet that always gets def isn't really exciting.. which is why I'd suggest:
5x production roid
5x construction roid
3x research roid - researchers work 5% faster
2x research roid - researchers work 10% faster
3x Metal income increases by 10%
3x Crystal income increases by 10%
3x Eonium income increases by 10%
2x Increases the mining of all resources by 5%
5x Alertness roid - increase alertness by 10
5x Stealth roid - increase stealth by 10, possibly above 100
5x Engineering roid possibly - third priority counts as if it were second
I chose 10% at the roids because 5% is very often not profitable for planets having them. They will get that extra 1/20th resources BUT they will also get twice or more times as much incoming, and thus lose income by owning a roid that gets you more income.
To prevent this from abuse and one alliance or planet owning all the roids, every planet can hold a max of 2 roids. Every 500 ticks the roids will be reset to a random location in top 50-100 gals and people will have to guard or loose them. The three planets that have held a special roid for the longest total time get a credit at the end of the round.
And perhaps - as someone else suggested, show on gal page someone has a golden roid to attract attention to it.
Last but not least - please don't react with "no" only or something like that... it are just ideas and all the numbers are something I thought of which means they might not be the most balanced ones.