After looking back at all of my brainstorms, I chose three ideas to quickly expand on to see where they could go and if I could make an Act I, II, and III out of them. I also considered if this could be done effectively within a 1-2 minute animatic. So far, I think the idea of mind-controlling computer implants is one of my better ideas and is capable of getting across to an audience effectively in a short animatic.
I also quite like the idea of the blind alien/robot... but that might be too ambitions for a 1-2 minute animation. I suppose that depends on how detailed I make it and what shots/imagery I used... but I think I might risk not being able to get things across to the viewer.
As I tried looked into the idea of a robot trying to find his master in an airport-like space station I found it somewhat difficult to expand on and make interesting but I still quite like it. I think it could possibly work well too. However, right now I'm definitely leaning towards the 'computer chips controlling alien citizens' idea, especially since there are a few options for various components of the story (for example, if the guards are controlled too or not, if the protagonist dies or not, etc.) and I think I can get it across within the 1-2 minute slot.