We all dislike playing daily monocrystal missions. Premium license has no real benefits for many end-game players.
We can get only 1 monocrystal, some credits and standard synergy for each task - Empire, Federation, Jericho, Ellydium, up to 4 times daily.
With Premium license, we get +1 monocrystal +50% extra credits boost and +50% synergy boost. I recommend adding refined Iridium to those rewards.
Example:
Daily Open Space mission:
1 monocrystal, credits, standard synergy, 50 refined Iridium (added reward)
50x4=200 refined Iridium daily
Daily Open Space mission with Premium license:
2 monocystals, credits, standard synergy, 75 refined Iridium (added reward)
75x4=300 refined Iridium daily
In any case, standard synergy for completing a mission seems less relevant, than any other reward that you get. It could be excluded and be replaced with refined Iridium instead.
Base value for refined Iridium should be set to 50. With Premium license, it gives you +50% reward boost, which is a total of 75 refined Iridium.
It will increase Premium license benefits. I recommend that developers seriously consider this suggestion.
I am not asking for less or more, but the amount I specified here and I think this is fair for both sides.