system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Trek - Alternate Reality] Why hasn't Scott's transwarp equation made Starfleet obsolete- or entirely different?

WARNING: *Into Darkness* spoilers follow. Read at own risk.

Khan was able to teleport straight from Earth to Qo'noS and Scotty was able to beam aboard during warp, so the Prime Universe limitations seem to have been stretched significantly, if not outright broken. As witnessed during Spock's clever destruction of the USS *Vengeance*, it's also possible/easy to engage in combat by simply beaming torpedoes onboard.

What do ships have to offer that they've essentially retained their role despite the advances in teleportation/beaming technology?
gpt
> it's also possible/easy to engage in combat by simply beaming torpedoes onboard.

No, it's not.  Khan had willingly lowered his shields and allowed the torpedoes to be beamed onboard; further, that had nothing to do with transwarp, as both ships were in normal space at the time.  Any Starship captain worth his salt is going to keep his shields up during combat, and if your shields have failed to the point where your opponent can beam torpedoes aboard, then it's not going to really matter much anyway.

The transwarp equation allowed for a genetically engineered superhuman to make a one-time use device that was easily traced to its destination.  He was unable to bring any cargo with him and the device was quite large, making him vulnerable when he used it (albeit he  solved this by being in a gunship).

Here are the advantages of the transwarp device Khan used:

1. Instant transportation
2. Long-distance transportation

Here are the disadvantages:

1. Vulnerability during use
2. Traceable
3. Does not allow you to beam to places you do not have the coordinates for
4. One-time use
5. Cannot go into space
6. Personal use only

Here are the advantages to a starship:

1. Able to actually go into space
2. Able to beam to places without prior knowledge of coordinates (as you are in a ship and capable of finding said coordinates in real-time)
3. Not vulnerable; surrounded by a massive starship
4. Can beam and move cargo or multiple people at once
5. Reusable

The disadvantages, of course, being that it take a few days to travel.

Starships offer a better advantage in almost every way other than instantaneous transportation.  It is a proven science that is superior in scale, protection, and engineering than the use of personal devices for long-distance transport.