Lots of stuff in this thread lol....where to begin??
So about the 2021 models. No...there is nothing out there. In fact, if the predictions are true about a new generation coming in the 2022 or 2023 model yeah, then I suspect we may not get a refreshed 2nd generation truck at all which is a bummer. That said...it is still completely possible. It is normal now for GM to refresh a model just a few years out from the new generation, so if 2023 will be the new generation then 2021 could be a refresh. There have been zero sightings of a new generation (save for one TFL page months ago that seems to spot a global Colorado testing here in the U.S. Maybe that was some kind of mule?). If mules are sighted, that indicates a good 2 - 4 years out from reveal, whereas if a camo'd vehicle is spotted then usually 1 to 2 years out from reveal. A camo'd refresh on the other hand is quicker, usually resulting in the next model year being the refreshed look.
As for interior options. Yeah I'm kind of in that boat also. I'd like to see a two toned option outside of the ZL1 model, which I happen to think the two toned seats look nice. Otherwise, you get all black, or you get all grey (or tan in the Canyon). I will give props to the ZL1 and All Terrain for their two toned seats, but that's it. The rest are kind of bland. I kind of expect GM to up the ante in the next generation. The Denali trim will be even more upscale (read...more expensive...no doubt) but I think Chevy may also offer a High Country trim on the Colorado. In the end, this is kind of nit picking.
I don't like the seats much in my 2015 with gray leather, but I've driven newer models with the slight seat revisions and liked them better. Not in love with them, but better.
The transmission issues. I have yet to read of someone going back with issues after the very latest TSB or a 2019 model that was produced after Jan 2019. I'm not saying I'm convinced the new fluid fixed the shudder, but it is looking a bit more promising. Yes not everyone has issues with the 8 speed I'm sure, but there is no denying that it is a huge issue and affects a HUGE number of people. I know 3 people with 2017 or 18 models (mine is a 2015) and each of them had had issues or had their TC replaced. Also, just a little research shows this is an issue for the entire line of trucks/cars that have used the 8 speed. So no...not every single person has had issues I'm sure, but the problem is undeniable and just sad really. I pray that the late 2019 and now 2020 trucks with the new fluid are better....which brings me to...
...the 10 speed. I think GM is slowing building up enough production of this unit so that they can use it everywhere. This year they expanded the 10 speed further across their full size lineup, and are also including it in certain cars with the V6. We had hoped the same would happen with the midsize twins, but nope. I still think there is a good chance we could see the 10 speed before the next generation in these trucks. I see some comments here thinking that more speeds will result in the same issues, but I think that is not the case. The 8 speed transmission itself is pretty good...the issue lies with the torque converter and the tuning based on the large amount of things I've read. I have not read of this issue with the 10 speed.
I think GM knows their mid-size trucks are still easily competitive with all of the other offerings....except for perhaps getting a bit stale in the looks department (FYI, I don't think the Ranger looks any better, but at least its new lol). They may just decide there is no reason, or maybe not enough profit right now in the segment to warrant a refresh.