BI for developers. Developers run many organizations and teams now, but most Business Intelligence-ish tools are either built for business people (Tableau, Domo) or for marketing (all analytics products, specifically GA).
I feel like there's a big opportunity for a tool/tools that are installed in apps as a package and then customized from there. Many teams build a version of this in house (Instacart open-sources theirs), and I think it should be a product.