One Search field for one board or all boards

Saw this request on Monday’s Facebook group. Thought it would be useful here too for wider discussion.
https://www.facebook.com/groups/dapulseaddicts/permalink/1296532367181266/

"So…

Why are there two search fields anyway?

Shouldn’t we just have one, with a filter to search current board, all boards or archives?

I’ve been working a lot with search lately and I find it very strange that I have to jump from one search to another.

When I use the search everything, I also find it very cumbersome that it wipes out my entire navigation while it searches."