I've just received an email from Adobe with the subject 'Learn how to create high impact presentations'. In it:

Creating high impact presentations.
Learn how to make your presentations stand out with compelling imagery and graphics, using Adobe Stock to find the perfect assets for each project.

In this session you’ll discover

How to find the perfect asset you need for your project
How to leverage artificial intelligence to refine search results
How to access Adobe Stock directly from within Microsoft PowerPoint
How to license, save and share images and assets
When: 2 July - 3pm BST

Why would I want to use PowerPoint? And why are you not promoting Spark? It's very confusing. Spark is almost functional as a online presentation tool. It's definitely more capable than some platforms, though somewhat simplistic in when defining the company brand. We're in the midst of exploring ways to ditch the inefficient PowerPoint/Keynote ecosystem we currently have, and will likely sign up to a service in the next month. I really like Spark, but from your own communications, even Adobe isn't ready to back this as a presentation tool.
My idea would be to give it that 5% of functionality it is currently missing.