I hope this is original, but not stupid.
I think Lavos is a biological Colony Pod. Think about it! He acts, in some ways, like one. I had to write about what I would program something usefull in the future to do, and I did a Colony Pod. Here's how it went:
1) Find a Planet either capable of supporting life. Go to step 3.
2) If there are none, Terraform.
2a) If there are some, but there is already life, hibernate until:
2aa) Life becomes extinct,
2ab) Or, if life seems to be prospering, destroy life, any means necessary.
3) Reproduce.
Basically, I think Lavos did Steps 2a, 2ab, and 3. (I think Chronoia (Crono's planet, as I have now named it), was slightly off for Lavoid Life, as it is shown that Lavoid and Human can live in 2300, just Humans live in bad conditions.