The programs and libraries in the repository are much smaller than in other distributions. To install some marginal program or library, you should know how to use Distrobox or build from source and then package it in RPM or AppImage (optional, but much nicer), but that’s a bit tricky. You can try to make a package request, but it’s not certain that there will be a decent maintainer who will devote the time and effort to maintain it decently.
By default in the live images and in the installed system, if you have an nVidia GPU, you may have the nouveau driver enabled, it doesn’t work well with modern graphics cards and you should know how to disable it on boot in GRUB. I don’t know if there is such an option in live, but just in case, I’d recommend familiarizing yourself with the nomodeset option if it’s not there. And you should install a proprietary driver in the installed system via console mode, which is a good thing. About all this, I think you should make articles in your wiki, like Void or Arch.
The problem will soon become irrelevant and should have been mentioned much earlier, but I will write about it anyway. DNF is a very, well, let’s just say very slow package manager. I don’t know why the developers chose this particular one, probably because they were looking for it on purpose and supplied it to people. Its speed can definitely be annoying, especially if you are using HDD (but nowadays, this is not very common).
There are not so many GUI programs that are auxiliary and convenient to configure some important part of the system or related to a feature of the distribution itself like in Mint, OpenSUSE, Manjaro or Ubuntu or anywhere else. But I don’t think it’s a serious problem either. For the most part it is a skill issue of the users themselves.
There is no option to vanilla configure KDE Plasma or not install the desktop environment and additional GUI programs from the distributive.
Repositories with proprietary software, or even free software that uses proprietary technologies, are disabled by default. This will cause some inconvenience to the user. But this is solved quite simply.
So far, these are all the specific characteristics of the distributive that I’ve noticed and they should definitely be mentioned to a new user beforehand.