The weirdest thing about the lack of this feature is that it wouldn't even involve a lot of data shown. You can basically summarize the class progression of most D&D classes and subclasses in 4 sentences.
Case in point: subclass description I just took from RPG Bot:
![[Linked Image from i.imgur.com]](https://i.imgur.com/9Wcf9Kd.png)
In a videogame you would even need the text format. Just a bunch of Icons (with their respective readable tooltip, of course) listed in a relative short sequence with the level you unlock them.