Please enable the creation and use of SketchBlockDefinitions and SketchBlocks within Assemblies, the same way we can create and use them in Parts.
Some profiles simply must be used at the assembly stage, rather than at the part stage, and some of those profiles are 'standard' or at least very common, if not globally, then at least within the company we work for. It is simply horrible, with all the other more complicated advancements we have today, that we should have to manually draw the same exact profile many hundreds of times, in hundreds of different assemblies, for years. If we could simply have a SketchBlockDefinition for that (and many other) profile in our template assembly, then just drop it in whenever we need it, just think of the hundreds of hours of expensive labor that would eliminate over the course of 5 years or so. This would save tons, and tons, and tons...of time.
To Create and Edit 2D Sketch Blocks for Reuse
Related Inventor API Help Links:
SketchBlockDefinitions
SketchBlockDefinition
SketchBlocks
SketchBlock
The other thing that needs to get implemented in assemblies is iFeatures (Link, Link, Link) (for similar reasons), but there is already an active 'Idea' post for that. Link(s) below.
https://forums.autodesk.com/t5/inventor-ideas/ifeatures-in-the-assembly-mode/idc-p/12621059
https://forums.autodesk.com/t5/inventor-ideas/make-ifeatures-work-in-assemblies/idi-p/9812904