To be fair The Enterprise surrendered to the Q a being so smore advanced then the federation that he might as well be a god
True, though it doesn't change the fact that within 20 minutes of meeting the new ship, it surrenders
Also the E-D (and TNG Galaxy-class vessels in general) had the habit of blowing up if someone looked at them funny, and was ultimately taken out by a 20+ year-old BOP. Given the safety record of that thing, I think I'd actually be safer on the Defiant.
with The Voyager it was more a rash spur of the moment call that stranded not calmly made massively idiotic call, basically Janeway made a wrong call when under time constraint that happens and we shouldn't judge her too harshly for that (there's plenty of evidence to judge her later on).
it's easy to say we should do this when the enemy isn't breathing down our necks and we have all the time in the world to formula our plans.
Their torpedoes
do have timers and can be transported onto another ship, given that they were trying to figure out a way to use the array while preventing the kazon from getting it one would have hoped that
someone would have had enough brain cells to figure out the "leave a bomb behind" tactic. If anything, Chakotay needs to share some of the blame here as was supposedly an expert in "advanced tactics"
and had been leading a guerilla war.
Defiant would have won that fight if they hadn't been cloaked with shields down / weapons not powered. Remember they turned off all non-essential systems as well.
10 months later, they went up against 150 Jem Hadar ships, killed 12 of them and got out alive.
6 Battlebugs would not normally be an issue for the Defiant.
Exactly, I don't get why people see the Defiant as some kind of failure, since it's obvious that it can handle itself quite well. The Defiant-A (the renamed Sao Paulo) appeared to be just as good as the original, minus the cloaking device.
Strange thing about the Defiant. Starfleet doesn't seem to know just how good it is/the stock version isn't as good as the hero ship. There a couple of instances to spring to mind: In Homefront, Starfleet doesn't know about it's ablative armour. And second the Valiant can only pootle along at like Warp 4 until they run across Nog and he shows them the fix O'Brien developed to solve that issue. Combined it implies to me that the USS Defiant has had a lot of fixes and upgrades that have not been incorporated into the 'stock' version so Starfleet may not be aware of its full value.
While that's true at the time of Homefront (the Lakota was also heavily upgraded without most people knowing about it) by the time of "What you Leave Behind" Starfleet seems to be building Defiants to Sisko's specs as the Defiant-A seems to do as well as the original (minus the cloaking device).
IIRC, the Valiant was stuck at warp 3 and Nog's modification let them reach warp 4. Later on Nog is able to help them reach warp 6. Given that the Defiant's top speed is warp 9+, it's hard to say exactly what was causing the problem - IMO it's a combination of previous battle damage and the crew's inexperience.
Even so, the second point I'd make is that we don't know much a Defiant 'costs', it may be small but is also a collection of unique or very rare techs. Especially when it was built. Quantum torpedoes, armour, pulse phasers etc. Packing everything in a small tough hull, maybe that costs as much as more capable multirole cruiser like a Norway/Steamrunner etc. So they might not want to build them in peace time.
Or it could be that once the tech entered mass-production the costs went down and the Defiant actually became pretty cheap to build. Or it could be that it's fairly expensive to build, but not so cost prohibitive that they won't build any. We
do see more Defiants than Intrepids or Sovereigns, so it seems like Starfleet decided to go ahead and build some.
That's a Watsonian explanation. For a Doylist one, DS9 having a war fought with wolfpacks of Defiants making up the bulk of their forces, would be yet another strange co-incidental aping of B5 and it's Whitestar Fleet. They probably want to avoid that. Plus they already had the models for the variety of ships. (Though they did kitbash somemore for the fleet scenes)
Also the writers and/or producers thought that the audience would be too stupid to figure out that there could be multiple ships of the same class and get all confused. It's why we never saw a Sovereign and only saw another Intrepid once, because they didn't want the audience to confuse them for the E-E or Voyager.
Would the Defiant-class be considered a dead end on the technology evolutionary tree, or a totally useless piece of junk?
That's kind of a loaded question isn't it? "Are the Defiants dead end or are they already useless and should be scrapped"?
Answer is: we don't know if they are a dead-end branch. We don't know how easy it is to build a Defiant (apart from the fact that we see more of them than the Sovereign and Intrepid), and we don't know how easy it is to upgrade one. It might be difficult, but then again it was able to accept a Romulan cloaking device with relative ease, so its hard to say. How hard would it be to add things like regenerative shielding and a better warp core? It's probable that it wouldn't be able to handle things like the Quantum-Slipstream drive that Voyager brought back (nor is it likely that any other ship could for that matter) but as for the rest we're not sure. The design was still relatively new at the time of ST: Nemesis.
What we do know is that after Sisko and co. worked out the kinks it became one of the most powerful / maneuverable warships in Starfleet, and given what we saw on screen I'd hardly call it a "useless piece of junk". At the very least the Defiant-class proved that the concept worked. I'm not saying Starfleet should be
only building Defiants, but given their performance there is no reason to assume that they are failures destined for the scrap heap. It's pretty clear that the Galaxy-class is Starfleet's favourite though, given that we see so many of them (especially in EndGame, where there was ~11 waiting for the Borg Sphere compared to 2 Defiants, a Nebula, a Prometheus and a couple of Excelsiors / Mirandas).
"I reject your reality and substitute my own!" - The official Troll motto, as stated by Adam Savage