I wonder if it's possible to write one extension using WebExtensions, which does a better job supporting OpenSearch? I know that WebExtensions is limited, but

I wonder if it's possible to write one extension using WebExtensions, which does a better job supporting OpenSearch? I know that WebExtensions is limited, but all one would need to do is read the OpenSearch data, store it somewhere for later recall, and open up some path in the ui to search on a site that we stored the info for. And, of course, launch a tab with the results in it. Sounds like a nice little side project.