I have to disagree that the TNG vibe is weaker in STC than NV. NV doesn't go to the command conferences, the Counselor, or the Holodeck the way STC does.
I don't think it's bad, but when it reaches a certain point it puts me in a different headspace as a viewer, and that may not always give the end results the production crew intended. It was certainly a factor with "The White Iris," which definitely felt more like a TNG episode than a TOS one to me. It was an enjoyable fan film, but if STC's goal is to faithfully recreate the experience of watching a TOS episode, then I think they missed the mark.
I still enjoyed it, and I'm looking forward to the next episode, and any that follow.
Really? P2/NV fx look like CGI from TNG/ Voyager. "The Child" is a TNG episode. TNG style Klingons? "Blood and Fire" could never have aired on 60's or 70's TV.
I enjoy P2/NV, but it comes off as a modern reboot. Nothing wrong with it, but a nostalgic TOS vibe just isn't there for me whereas STC takes me back in time.
A couple of points, if I may. First, I don't think there's any question but that STC has the greatest visual fidelity of any of the fan films. It looks just like TOS in a lot of ways, and definitely more so than NV, which looks much more modern to me.
The thing is, looking more modern doesn't necessarily give me a TNG vibe. It doesn't necessarily give me a TOS vibe, but it's not a binary; not looking or feeling just like TOS does not mean looking and feeling like TNG.
As for the specific episodes you mentioned, yes "Blood and Fire" was originally pitched for TNG. "The Child" is a little more complicated, as it was apparently initially written for the original Phase II project, then adapted for TNG, and finally filmed in closer to its original form for NV. Neither it, nor "Kitumba" is really a TOS episode, but both draw their origins from the original Phase II.
In fact, that's the vibe I get most of the time from NV; it feels the way I imagine the aborted Phase II series would have more than anything else. It's not pure TOS, but it's not TNG either.
The thing with STC, at least for me, is that it does seem to draw elements directly from TNG, rather than indirectly, and the visual fidelity to TOS makes them really stand out more. I first noticed the TNG elements in "Pilgrim of Eternity," where it felt like the writers gave Kirk more of Picard's command style with the repeated conferences. Lolani had its own issues for me, many of which had to do with Kirk again seeming more like Picard than Kirk in command style. It's particularly jarring because of Vic's body language which really does nail Kirk.
As for "The White Iris," if that's not a TNG style piece I don't know what is. It not only includes both the Counselor and the Holodeck (TNG staples) but relies on them for the episode's resolution. It has the strongest TNG vibe of any TOS-era fan film I've ever seen. It literally could not have been filmed as written without TNG-specific elements that were never seen on screen in TOS during its original run, and I don't believe that to be true of any of NV's episodes.
Other people's mileage may vary, but for me STC has the strongest sense of "TNG in TOS clothing" of any fan series. It's the combination of the strongest TOS appearance in conjunction with explicit TNG elements that does it for me, and other films don't have that particular combination of factors in play.