Quick answer: Valve's October 30 Proton Experimental update fixes a random Helldivers 2 crash, BeamNG.drive crashing with its Vulkan renderer and long Witcher 3 Remastered load times, and makes Gray Raven and Crown Trick playable.
Helldivers 2 players on Steam Deck and Linux should see fewer crashes. Valve's October 30 Proton Experimental update fixes a random crash in the game that showed up after a recent game update, according to the Proton changelog on GitHub.
BeamNG.drive gets a fix too. A recent game update had it crashing with its Vulkan renderer, and that's now fixed. The Witcher 3: Wild Hunt - Remastered no longer has long load times after death when game controllers are plugged in. Gray Raven and Crown Trick are now listed as playable.
The update has a few smaller fixes as well. Mouse wheel scrolling is fixed in Metal Gear Solid V: Ground Zeroes. Way of the Hunter 2 and other games no longer have issues on PCs without NVIDIA GPUs because of dxvk-nvapi. Valor Mortis no longer shows a driver GPU warning on AMD GPUs. Valve also fixed multiple copies of Xalia, the tool Proton uses to add controller support to game launchers, running at the same time.
Proton Experimental is where fixes get tested before they reach a numbered Proton release. GamingOnLinux notes the latest stable version is still Proton 11.0-2, and a Proton 11.0-3 release candidate is in testing. The October 15 Experimental update fixed a rare ARC Raiders crash, and those changes are still part of Experimental too.