It's definitely one of the weakest parts of the Firefox dev tools suite. I quite like Chrome's network panel though.

I consider Firefox's Network panel more useful than Chrome's. Having the ability to edit and resend network requests out of the box is exceptionally handy.

On the other hand, having it always be a 2 step process kinda stinks. I haven't yet seen a way to just say "replay this request". The editing is nice, but I almost always have to just replay, quickly, and I can't do that in FF, but can in Chrome. Might be 20% of the time the 'edit and resend' is a handy/useful functionality - 'replay xhr' is handy the other 80% of the time.

Copy the whole thing as curl, then go to postman and import the raw text of the curl command... Edit and replay all you want