I hope that the species editor will still exist and that it will be adapted and expanded
1st suggestion: Creation of a special function for each species, two pieces and in the case of one's own species, these can be freely selected when creating.  these might be called traditions. example: Holiday, spend money. The production is interrupted for one round and you get a bonus on satisfaction for a number of rounds.
2st suggestion: fixed forms of government that make each species more unique and give them their own playstyle. example of a new government: warlord here the ruler is the one who contributes the largest share of the military 
1st question: is registered under which governors which ship was built. because if the governor betrays one, it might be useful to know that in order to spot potential traitors
2st qustion : will you release additional species pictures and dlcs species for species editor
Note: it breaks the atmosphere of the game when a species is created but the leaders do not belong to that species.
it bothers even more if they are simply human.
I hope I was able to stimulate ideas and thank you in advance for your reply