Editor Utility Objects (not widgets) and Action Utility. First one can help to do background checks to validate objects in a scene in the editor for example, while the second can add right-click utility.
How Static Switches in Materials create Permutation (by lowering Instruction Count Down) and if that’s an issue // When Master Materials should have switches or a completely different version of themselves.
Mass Entity System
“Projected Mesh Decals” or “Material Solution” as alternative to Decals for meshes with “Receives Decals” turned off (like Characters)