I'm honestly still new to the whole Twitter thing in general, but I'm trying out a few things.
1) If Lara trusted the Coalition, she’d work for them as a pilot flying the void between the worlds. She’d know what to think when they tell her a captain went rogue + killed the other pilots. But if Lara doesn’t fight with them, the captain might end the worlds.
2) Lara pilots her airship through the void between the worlds, scavenges in ancient ruins for lost artifacts, and always sticks her neck out for her tight-knit crew. Now she has to chase a military renegade through the void to prevent society’s destruction.
3) Lara Kavarin flies her ship through the void between the worlds, seeking lost treasures. Amerlaine Silver wants to unleash the horrors of the void to destroy society. Outmatched, Lara must stop her, or else the worlds will become a living nightmare.
That's an interesting concept. I've seen similar things -- the steampunk/SF mashup of ships. The Winds of Marque is coming to mind (although that's a bit prior to steampunk...more like SF/meets 1850s pirates). And the concept of space travel as sailing is something that most SF agents will be familiar with. It's not common, but it's been done enough where you're not going to have to lay it out in detail. If the question is does a pitch that focuses mostly on setting have value? Maybe? Like if you're Essa Hansen and you've invented the coolest multi-verse concept that I've seen in years...maybe that alone would interest an agent enough to look at a query. For you? I think 'Steam-punk meets space opera' is enough for me to look at it and say 'yeah, I've got to see that' or 'no, that's not for me.' Which is really what you're trying to do with a pitch. So I guess that's a yes...I think that pitch works. Steampunk meets space opera when the captain of a worlds-traversing airship must battle a military renegade.... But maybe change 'can destroy society' into something more specific? Because I can destroy society by making people lose faith in an election. But that's not really what we're looking for in a space opera.