I think it would be very helpful to have a blog post that documents how to use OData filers with SharePoint Get Items and Get Files actions. I see OData questions asked quite frequently.
This is indeed one of the more popular posts on my blog:
I'll write a blog post on this within the next week
I am actually planning a video about this as well with @ahmadn82
And the O-data intro Video is LIVE!!! - https://powerusers.microsoft.com/t5/Webinars-and-Video-Gallery/Microsoft-Flow-Tutorial-O-Data-Introd...