Consistency of heading capitalisation
No objection from me. For this page especially the (hopefully self-explanatory) Table of Contents will read better with the convention you suggest.
There may be occasions when capitalising each word in a heading is appropriate (e.g. when the heading is also a title such as "WikiEducator Community Council" or "Deputy Chair", etc.).
Good. I made the changes.
I agree about proper names being capitalised in the heading. A style guideline addressing capitalisation was proposed awhile back. The style guideline workgroup fell into disuse after Jesse Groppi discontinued her work in WE.