Yikes!

They've just revamped the stretch goal freebies, separating them into three categories: "Everybody wins", "Army levels" (which includes the 'Everybody wins" stuff) and "War of the Worlds levels" (which also includes the"Army levels" and 'Everybody wins" stuff).

I've revised what I was planning to buy two times already and now I'm going to have to do it again.

They've also revealed some new things in the stretch goals such as Command stands and a Martian Power node.
Gotta admit this is a hard sell, getting folks to commit to buying entire armies... but they do seem to be trying their hardest.