I think that's a non-good tag name for the site. "Hebrew Bible" isn't a term Christians are apt to use.
old-testament-intertextuality is too long
how about pairing old-testament and intertextuality. A Christian scholar on the subject of intertextuality is probably not going to specialize in ot/nt intertextuality and my more than ot/ot or or nt/nt intertextuality.
I'd hope that most of us would see the New Testament as a continuation or a fulfillment of the Old Testament so you don't have to narrow it down too much.
There are a handful of questions that might be taggable https://christianity.stackexchange.com/search?q=intertextuality
I'm not an expert on Biblical Hermeneutics (the site or the subject) but the feeling I always had was that NT questions that touch on modern or classical doctrine should always be on this site and NT questions that focus purely on the words themselves should be on the other site.
Personally, I have very little appreciation or use for the whole topic as I don't believe worrying about what the words mean in context is more important than worrying about what the Church says they mean. So I would move 99% of the questions here and ask the OP to place a denominational tag on them on them and save a lot of headaches for people who bring their baggage to BH.SE and call it objectivity.