So I really like the Stargates. They’re a lot more limited/less flexible in where you can travel, but with that limitation comes unique challenges and intriguing stories. The biggest pro about them? It’s the fastest form of FTL there is. You can travel literally instaneously to any other gate. And there are innumerable gates to travel to.

But there are a lot of cons too.

Convenience… gates must already be where you’d like to go. The gates are relatively small, unable to fit even a car through, and the gate has a time limit on holding it open so there is limited ability to send large quantitaties of goods through and absolutely no large objects.

Risk… connections are blind, so you don’t know what’s on the other side until you or a probe goes through and relay back details. And it’s a single point of entry, and only one way, so it’s easy to be trapped or ambushed on the other side without escape. The gate can also be damaged or have its dialing device missing, disabled or destroyed, making it functionally useless from that end. If your gate is dialed into, the only way to stop anyone from traveling through is with a barrier so close to the wormhole event horizon to make molecules unable to materialize. But even then, they can hold your gate open from their end for the time limit of the wormhole, and then immediately redial and prevent you from using it indefinitely.

Unknowns… Certain anomalies like black holes affecting the destination gate can also pose a cataclysmic danger to planet of the gate of origin. Random happenstance with solar flares can cause the wormhole to travel through time as well as space. Gates may be too far to travel without extra power, and there may not be power available on the other side to get back. Gates can be dialed at random or you may have a list of addresses, but without someone who’s been to these gates before, you have no idea who or what you’ll find on the other side until you dial it.

The typical use for the gates is cool, but the really interesting stuff is when things go wrong, or when people get really creative with the mechanics. Things going wrong like heading home to Earth but being gated unexpectedly to an icy cave with no exit and no dial device to be found and everyone having to figure out where you went even though none of it seems to make sense. And creative things like overcoming the gates’ distance limitations/extra power needs to cross between galaxies by daisy chaining hundreds of them in the void between the galaxies and setting up a macro to pass the matter buffer from one to the next without rematerializing the objects and people within in between.

Of course, traditional FTL ships exist in Stargate, but they are much slower than the instantaneous stargates, and have other dangers associated with them, like other armed ftl ships, pirates, replicators… Most ftl ships in stargate use hyperspace travel, but I believe that the Ancient’s inter-galactic stargate seeding ship, Destiny, uses a classic warp drive.