I've rarely had any input into game development. I just saw games at the FLGS and picked them up. (I think I did write a letter(!) to Task Force Games once complaining about how weak SFB's Kzinti ships were.)
The 13Mann team has really gone out of their way to elicit comments and ideas about this product. And more, they are listening, even if they don't end up using the ideas. In my opinion, it's making Liftoff a better product.
So what? Follow the link above. Read the rules. Think about when you first picked up a LBB, or the Megatraveller rules, and what you thought about it, and maybe what confused you, and what you really liked. Then, maybe make a post to their boards about something in the rules you like, or don't like, or think should be added or changed or removed.
Remember that first Scout character you made? And how excited you were when he rolled up a Type S Scout/Courier as a mustering out benefit? That's it.
That's what I'm talking about. Get in that mindset. Then go read.
(There, Aramis. You asked me to post something constructive. That's about as appealing as I can get.

)