Maybe you're forgetting that we're talking about TV.

The odds that any given show will represent an interesting creative risk is miniscule vs. the odds that it's a crass and wrongheaded ratings ploy along the lines of thinking the sci fi audience and the
Grey's audience share enough in common that they'd like to see their genres mashed together into the same show.
Again you're taking the
Grey's comparison far, far too literally. Don't confuse the way advertisers choose to promote a show (or the way TV critics choose to pigeonhole it) with the actual intentions of its creators.
And I don't see any reason to jump to the conclusion that this is a "crass and wrongheaded ratings ploy." In fact, aren't you contradicting yourself by saying that, given that you're also assuming it will bomb in the ratings?
Maybe it's just that I had the same idea myself once, but I think this is something that has a lot of potential. If I don't get to tell the story myself, I'd at least like to see how someone else handles it. And I don't see any benefit in assuming the worst about an unknown.
I'll give anything in sf/f a shot. But after seeing shows with promising premises like Heroes, FlashForward and V turn out so badly, why should I hold an iota of hope for a show that has a bad smell about it from the start?
Because hope is the only reason to go on living. If you decide that there's no point in hoping just because you've been disappointed before, you might as well just give up trying anything, ever. Would you give up eating just because you've had a few lousy meals? Would you enter a convent just because you had a few bad breakups? Life goes on, and it offers unknowable possibilities. Disappointment and failure are parts of life, but so is the occasional success. It's self-defeating to give up on the possibility of success just because failure exists too.
And really, it's just a TV show. It won't scar your psyche or ruin your life if you watch a few episodes that don't satisfy you. So what's the harm in giving it a shot?
For whatever reason, doctors and soapiness often go together. I guess we can blame General Hospital.
Ohh, I'm sure GH wasn't the originator of the trope. There were soaps on radio long before TV came along, and I'm sure they included medical shows. But then, there are also medical shows like
M*A*S*H or
House. There are lots of ways to approach the topic.
Anyway, the context should be considered. This is being developed for Syfy, so it's likely that they'll be aiming for the same tone as shows like
Eureka and
Warehouse 13.
I won't argue with you there!

But I can't envision how a doctor-soap-in-space could be executed any better. It just shouldn't even be attempted to begin with.
In space? We're talking about a superhero show.
And as a creator myself, I am disgusted and outraged by the suggestion that any type of creative endeavour "shouldn't" be attempted. That kind of thinking breeds censorship and the repression of free thought. It's a hideous thing to say, no matter what the subject. Freedom of speech, freedom to tell any kind of story a creator desires to tell, is an absolute. You're entitled not to watch such a story, but it's an outright obscenity to suggest that people "shouldn't even attempt" to tell stories that don't suit your own personal tastes. Shame on you.