It's a little silly to revisit your mistakes like this, as if you could have done anything better. Most companies are poorly managed and produce nothing of value. The team at id Software changed the world and produced an absolute masterpiece.
Quake 1 was, in many ways, where id Software peaked. But the time Carmack spent optimizing Quake Live, based on Quake 3, ultimately made it his twitch FPS magnum opus.
Even 20 years later, there's no FPS game that comes close to the speed, mechanics, smoothness, and just overall quality: https://youtu.be/tU6v8C1pw8Y?t=675
I disagree, even for successful projects retrospection toward mistakes is worth the pain to learn.
Frankly, Unreal Tournament got a lot of that energy and peaked gameplay. Very new fresh ideas like capture the flag back then was really cool. And the speed and stability was also great.
>It's silly to revisit your mistakes like this
revisiting mistakes (in a healthy, non-obsessive way) is not silly at all. it is great for self growth, and in this case, is a great way to pass on wisdom.