A little adjustment can change everything.
Just add global frequency coefficient to expedition results.
Let me explain this;
global frequency coefficient = ln( 1.718 + expedition richness ย )
expedition richness = ( #ofactiveplayers x expedition point limit ) / total expedition points sent by all players in last 12 hours
So lets assume 1200 players are currently active,
and top player has 160k points. so expedition point limit is 6000 points. explained here
Also assume that all players sent 1.200.000 expedition points total worth of fleet in last 12 hours.
expedition richness = 1200 x 6000 / 1.200.000 = 7
ย ย ย ย ย
global frequency coefficient = natural logarithm(1.718 + 7 ) = 2.164
All prizes gonna multiplicated with 2.164
Another example;
Only a few player sent to expedition in last 12 hours and total expedition points is 12.000 instead of 1.200.000.
expedition richness = 1200 x 6000 / 12.000= 700
global frequency coefficient = natural logarithm(1.718 + 700 ) = 6.55 prize is quite high now but not causing any unbalanced situation.
This will encourage people to send to expedition since prize will be higher as long as fewer people explore the deep space.
There will be more alien and pirate fights and more DF, expedition going to became more important so do discoverer class.