These are some interesting ideas you have. One thing is that the way we work is to plan only a few months ahead. So while there are ideas for later in the game things don’t get fixed until just before they are implemented so the later stages are still pretty open to changes.
Re your specific ideas:
Organism Editor: yeah I agree it is important to find a balance between how easy the editor is to use and how flexible it is, it’s a good problem and will probably need a lot of iterative testing. I think a lot of what you are saying are good ideas.
Pressure: Yes we have talked about this for the microbe stage, it’s something we may do at some point.
Superhuman skills: This is something we are doing in the microbe stage, the microbes can live in areas humans cannot, they’ll be able to bioluminesce, they’ll have little toxin darts and probably jet propulsion. So yeah lots of interesting things for this stage.
Male vs Female: Yes as the others have said we want to be very flexible about how species work with genders and castes etc.
Plagues: Yeah this sounds interesting, especially for the strategy stages.
Similarity to earth: One reason the microbe stage is similar to earth is because the team keeps discovering more and more mindblowing microbes on earth which are already very alien. For example bacteria that move with slime jets, cells that have eyes, single cells the size and shape of plants, bacteria with spearguns. So one of the main reasons we haven’t made up more stuff is Earth is already too crazy!
If you’d like to make some concept art or videos of later stages that’s a nice idea. It can actually be quite a cool way to influence the project as if people get inspired by it they may want to go in that direction. Having said that we are a long way off finishing the microbe stage so it will be a long time before we are implementing the later stuff.