Pretty much all data can be interpreted in a variety of ways. The design elements I'd start with wouldn't necessarily rule out other ways of life beginning. I'm simply suggesting what I'd start with in terms of basic design elements.
If I was trying to "design" something to populate planets, I'd start with self replication and adaptation to any water bearing environment. As long is it could self replicate with typical elements found on planets, and it could adapt over generations to various environments, it might be likely to survive and flourish.
I'd also want to "program" it to become more complex and sophisticated over time so that more "intelligent" adaptations could emerge over time.
I'd say that those are some of the key design elements that I'd begin with at least.