Wait, aren't we supposed to post these suggestions at Mantis? ._.
Since now I'm starting to feel silly about posting suggestions at there which nobody seems to notice xD
Trust me, we notice all of those, but we don't always get to everything immediately. If you put something in mantis, then it will be permanently logged and has a chance of getting implemented later on if it's not something we're going to address immediately. If it goes in the forums only, then either it gets added to our to-do list immediately (which sometimes happens, as here), or else it gets permanently forgotten unless it does get to mantis.
Go one step further and allow space to ground interdiction flights. Swap the background for a planet base background and then have the Hydran player laying waste to armies, cities, etc.
Possibly as a giant robotic hydra.
It would take a bit of work to implement.
Something along those lines is something I'd like to really flesh out for an expansion sometime down the road. A lot more involved than what you're thinking, even, but I think it would be really cool. But not anytime soon, heh.