It’s missing a few key features though. Not being able to tweak the search text is a bit of a letdown since that’s pretty important for narrowing things down.
Can you elaborate on this? I don't really understand what you mean by tweaking.
Would you like variations that are more professional, casual, or critical?
As in what? Sorry but just like the other part, I'm not very sure what you're asking for here.
I am working on automatically including synonyms and verb conjugations of search terms in order to capture additional relevant topics.