One thing to say about this new edition : It's good to see an editor who listen to his games community !!
This edition is a huge clarification and simplification of the 1st edition. Where precise data were lacking, the 2nd edition give you the answer (swarm speed ? what about children ? Know skills importance for complementary bonus ? etc ...)
But ... most important ... this 2nd edition is an evolution and not a betrayal of the 1st edition spirit. Hard Science and crunchy rules are still here, just more accessible and with a better presentation.
very good job !!
[5 of 5 Stars!]