It is opinion based. Riddick isn't as great as a film as Into Darkness or the first Trek. I don't think any of the Riddick films come close to either of Abrams films. Which ones do you feel are better and why ?
It is not opinion that they are nostalgic. Crap maybe is opinion, but to me lack of originality and riding people's desire for nostalgia is a clear sign of poor quality. Reboots, remakes, etc is the crap that Hollywood is made of.
Let's explore this and bring it on-topic for a second: If Star Wars and Star Trek did not have any of the name recognition then I doubt they would have had much impact. They were relatively entertaining sci-fi adventures, but without the name recognition they could have just as easily fallen into obscurity just like Jupiter Ascending or John Carter. So these more original big budget sci-fi adventures (like this Valerian) have much greater odds stacked against them. Guardians of the Galaxy was a big surprise because the trailers actually didn't make it look very good, but it at least had the Marvel name attached and then it actually turned out to be great and word of mouth spread, I guess...
...which brings me to Riddick, which has even more odds stacked against it because they will from now on be R-rated and made independently and supported by a small and loyal fanbase. It is the brainchild of the director (David Twohy) and Vin Diesel. Pitch Black is easily on my (and many others) favorite movies list. It's just smartly written characters and great original dark pulp science fiction and even blends genres some, making it more interesting than just another big studio reboot.
So Valerian, which is largely unknown to anyone is going to have a huge hurdles to get over to be successful. So it has to be extra good. It's gonna have to be something surprising like Guardians of the Galaxy, which is looking unlikely. I mean, I'm gonna give it the benefit of the doubt, but the two main characters don't look like they will have amazing chemistry.
That to is an opinion because nostalgia only matters to those people who have fond memories growing up with something. So if you can't see this as subjective then you're clueless as to what the word actually means.
No, once again you're clearly wrong and allow me the time to point out why. It maybe a lack of originality which again is an opinion so who really cares but this is all subjective. Your definition of what is poor or great quality is once again subjective. To me it's this simple a movie either emotionally connects with someone of varying degrees or it doesn't. Movies that connect more or elicit a genuine interest in it are superior movies to me. I do not care whether it's original or not it either works or not.
That may be true but they have connected with their own fanbases so much so over an extended period of time they are still viable franchises. I for one can't stand the older trek so there is no nostalgia for anything Trek related pre Abrams. So my opinion is the first Trek was pretty damn good. It did bring about emotions and connected to me throughout the film. The second film Into Darkness blew my mind, it was years later so I didn't go in with huge expectations but Khan was amazing and scene stealing throughout the entire film. I didn't connect very much with Beyond but it was a different director and I didn't expect much but went in cautiously optimistic. By far the weakest of the three films but Into Darkness is one of my favorite films of all time and I had no reason or lifetime of fandom to be biased.
They do have greater odds stacked against them. The one great Sci Fi which failed demotic ally I loved was Edge of Tomorrow. That film was awesome and I went in with low expectations but was pleasantly surprised. I had higher expectations with Jupiter Ascending and walked out of the theater thanking that it was over.
Riddick wasn't a great film. I was bored the first time seeing it though I will be honest it's much better on replay value. It's a decent watch for sure and I enjoyed CoR.
Again this is all opinion based so it cannot be proven one way or the other.
I wasn't nostalgic about the films and yet I loved it anyways. Not everyone has nostalgic feelings for Trek. The films were excellent films IMO but it's all subjective and the criteria you judge films is different than my own because this is all subjective hence my unshakeable point.