They had some kickass developer streams on YouTube. I still remember when they were playing Saints Row 3 and (I think it was the lead designer) being amazed that a helicopter had an interior texture for the cargobay even though 99% of the time you wouldn't see it. Also skinballs and how they used markers to determine NPC behaviour out in the world.

Also the horror story of how they spent weeks compiling visibility volumes for Saints row 1 and having to satisfy silly requirements set by Microsoft such as having a game trailer play on the title screen if no input was detected for a set period of time. They just played a video of them playing the fucking game so they didn't have to do any cinematics lmao.

The Red Fraction Guerilla stream was extremely interesting. How they managed to make destructible buildings and the limitations of that system. They used a stress mechanic that used key parts of a buildings frame to determine how stable it is (can't remember if they used vertex weighing or not).

But unfortunately the most talented on the team didn't get much of an input of where the IP went