I really enjoy this. I think it would have a lot more meat to it if you had to perform some action to acquire the resources you give to the Teno, (hunt for meat, collect spores for mushrooms, maybe some kind of excavation for golden rods), rather than you handing them down from on high.
It would be interesting if the Teno had to find these things themselves, and you can only guide them toward the collection of those resources. This would put it more in line with the rest of the colony sim genre, but I think it would improve things anyhow.
I think it has really great bones and the whole idea of fusing/mitosis/dying is inspired, but there needs to be more dynamicism.