

Admittedly the “don’t know what’s on the other side” bit is a little iffy. Sure, they’ve got that little wheeled robot they use a couple of times, but after a while you’d think they’d do something as simple as “stick a camera on a pole through the gate first.”
Whatever it is, I’m inclined to like the versions where FTL is a teensy bit dangerous. Not necessarily 40k’s “FTL is actual hell and frequently fails in terrible ways”, but more… it’s risky. It’s a mundane risk, maybe. But still, there’s that little bit of risk in the background and it needs to be approached carefully…
Like, Babylon 5’s hyperspace is an actual place you make trips into, but it’s also highly nonlinear, and so it is entirely possible to get lost or stuck if your ship malfunctions. Also, there are living things in there which may not be friendly.
Even Star Wars’ Hyperdrives can be dangerous. It doesn’t get played up in the stories much, but a malfunctioning or improperly programmed hyperdrive can strand you in deep space, subject you to severe time dilation, or just splat you against a realspace object.