Not as browser but as default PDF reader.
When is MSFT going to add the most basic of functionality to it: [Ctrl]+O or a menu item to Open files, specifically PDF files? Those who use Edge as their primary browser (not me) may want to read PDFs already on their systems. Today, to do so requires launching File Explorer to find the PDF file, then double click on it to open it in Edge. Pretty much every other PDF reader there is would make that process easier and internal.
FWIW, it’s not as if UWP apps can’t recognize [Ctrl]+O. Code Writer recognizes [Ctrl]+O and displays the File Open dialog. Edge can’t?
I’ll stipulate that Edge is a wonderful browser, but as a PDF reader it lacks basic functionality.