"Currently Wolfram Community search is under construction. We strongly recommend using regular web search that will give you excellent results due to advanced SEO that Wolfram Community provides." The construction project seems to have lasted several years. I know there are finite resources, but I think Community would benefit from search within the Community page. Making it a priority would seem consistent with Stephen Wolfram's keynote at the 2020 Tech Conference.

"File attachments for any format you can find in Wolfram Language Documentation" is not correct. I tried to load a zip file. Zip files are listed. It was rejected as "not supported."

Having used both Mathematica.SE (which used this system from the start) and the previous editor on Community, I can say that this is a wonderful improvement!

I just have one suggestion for an improvement: the MarkDown source editor should really use a fixed width font. This is preferable for so many reasons: 1. spaces are very relevant in MarkDown, we need to indent with a specific number of spaces (the number also depending on whether we're in a bullet list) 2. code is always better edited with a fixed-width font (if there is't a complicated auto-formatting environment to help, such as the Mathematica front end)