So I have to rant a little about Star Trek Discovery...
I will first admit, I don't hate the series. But I do have to nitpick on a few things that are just simply wrong about where they claim this series is placed in comparison to established Star Trek.
Tech
So we get to see the ships for Discovery... Nice, sleek... And contradicts the designs laid out in both Enterprise and The Original Series (TOS).
Nacelles are Post TOS design (IE: 1980s Enterprise/Enterprise A), not sticking with the established 'round' ones. Even for the 'older' ship, the Shenzon. Even Enterprise, they made the NX-01 have the rounded nacelles.
Holographic Communications - Never was part of Enterprise or in TOS in Starfleet. It was 'screen to screen'. Holographic communication did not get involved until Deep Space 9.
Shielded Bulkhead support - Was also not available until The Next Generation. The TOS based ships didn't do that until around Generations level.
Transporter Controls - Both Enterprise and TOS transporter controls were still 'manual' switches, not the digital touch pad they showed.
Cloaking - Mostly a Romulan thing, not a Klingon used idea until TOS, and not until the whole Romulan/Klingon alliance came up during TOS. At the time, Klingons were pretty 'up front' about most of their fighting in both Enterprise and TOS.
Speaking of Klingons...
The drastic change in the Klingons and the pretty much ret-conning of what was established with regards to the Klingons.
Remember, in Enterprise, while it wasn't the GREATEST explanation of the whole "Why do the Klingons look like humans?" part, it at least explained why Enterprise started out with Klingons looking like traditional Klingons, then looked like Humans which was even glossed over in DS9 when Worf was asked why Klingons didn't look like Klingons as they do later on.
But this change is even MORE drastic. The iconic Klingon battle armor/tunic of either Enterprise or TOS is now a cast off of Vlad the Impaler from Bram Stoker's Dracula movie props.
More so, the Klingons here look even 'vampiric', or 'strigoi' (Re: The Strain) looking than either Klingon look we have seen. In fact, bald Klingons... Literally lacking even distinction between the genders short of hearing their voice.
As a fan, I am sort of disappointed that they would have us believe that this is set 10 years prior to TOS. Even when they did Enterprise, even with the Temporal and Borg stuff put in, kept things within reason of the 'time period' given when Enterprise was created in relation to TOS.
I will say, I am not going to condemn the show outright, mostly cause I found, despite my nitpickiness about aspects of it, I found the two episodes interesting for their setting.
However, I strongly suggest that they do consider that this is not part of the 'Prime' timeline. Definitely not part of the JJ Abrahms revamp timeline either. At best, this would be another branch timeline.
