Now, moving forward... weither by my description, or Stargate's description, or Babalon 5's description... Star Trek TOS should accomidate hyperspace ship travel as a valid alternate F-T-L technology, due to it's preponderance throughout prior, and contemporary, sci-fi usage. And dump the narrow-minded mindset, that warpdrive is the 'only' artificial mechanism possible to achieve F-T-L space-travel. And also, add robots.
Star Trek doesn't though. There's Iconian gateways, Transwarp conduits and similar Quantum Slipstreams (which I hazzard a guess is much closer to what happened in TMP than it being an actual wormhole, the science just wasn't advanced enough to recognize the difference), Coaxial Warp drives (which is essentially nBSGs jump drive, but doing many jumps automatically after another, which strictly speaking is not a warp drive at all), wormholes (the tube of which is embedded in Hyperspace), etc. etc.
It's just that warp drive, and subspace (evidence of its existence are all around us and thus can be studied quite easily) are the simplest easiest FTL to pull of. Hyperdrives and hyperspace and the rest requires a science and technology well above what is required for a warp drive. Hence we see most cultures having a warp drive or derivative, and only more advanced cultures have other, more advanced, FTL drives.
In the 24th century indeed, the Federation is fighting to break that barrier. They are already advanced enough to build and understand most of the science and technology that allows them to take it to the next level. They haven't quite managed to perfect them enough they can use it yet, but that's only a matter of time.
And since WNMHGB is the pilot episode of Star Trek... re-form the episode dialog and SS Valient recording to imply Star Trek is a derivitive of a "Forbidden Planet" prequel era (hyperspace flying saucers, Robby robots, etc.) - and override the NX-01 official canon. If necessary, do so in a new Star Trek universe - with fresh new canon, begining with a 100-year "Forbidden Planet" era. And set that up for a sequel TV/movie series of Star Trek: The Forbidden Planet Era (or some other name). Get Star Trek 'finally' hard-conected to it's real source. Then we can finally enjoy continous adventures of early human (only) exploration and colonization of nearby star systems, following a Trek-ish version of the new C-57-G hyperspace patrol saucer cruiser (named Enterprise), with a mixed sex/race crew with near ST:TOS clothes and hardware, as they maintain order in the United Planets, and persue rumored other still-existing Krell alien civilizations. And spending more time on alien planets and less time in space. All the while knowing that this era leads into a revised Star Trek TOS era - the formation of the "United Federation of Planets" from the existing "United Planets" - when they encounter their first 'living' aliens - the Vulcans. And the 'too many' other humanoid alien species introduced by prior Trek's.
??? But we already have a long history of Star Trek before Star Trek - and I'm not talking about the NX-01 Enterprise bullshit - one doesn't need to rewrite it, only to put something in there, that requires another heavy rewrite.
Seriously, Forbidden Planet, however good it was, is HEAVILY filled with 50s sensibilities. Indeed, in most cases when C-57-D pops up in fanfiction; often in crossovers, they treat Forbidden Planet as the product of an alternate timeline where the South of America won the Civil War, and subsequent wars and world wars made racial segregation a continuing human theme, and in the time of the C-57-D races have their own planets - and their own ships. (With the exception perhpas, of cultures who refused to go with racial segregation even after losing a war about it, and having left Earth behind to create a racially mixed planet here and there, where the rest of the planets look upon with disdain.)
I find the back history of TOS, and later Star Treks (minus Enterprise) far more compelling than shoe-horning C-57-D ships in there.