I kinda suspect that Stardock would like to have put more things in at release but didn't have the time and it is good enough as a release version. I suspect a lot of crinkles will be ironed out over time.
You can see the Stardock team sitting around a table saying:
"Only some seeds give good starting resources, a bad seed effectively screws the game."
"Oh poo...."
"Lets release it on schedule and run with it, more maps can be added over time. It will fly."
And thats ok by me.
*edit* Immediately after writing this I went to the Stardock Elemental forum and guess what, Version 1.01 released with more random seed maps