We get this feedback a lot actually - and we do plan to integrating bundle size (e.g. gzipped/uncompressed) into the product soon.
In terms of business model - we're actually thinking about paid promotion of packages: allowing maintainers (companies and individuals) to promote their packages, we found there's a big need for that. We want to limit it to a single (clearly marked) promoted package for each category. Obviously, we would just surface the promoted package, but the package reviews, insights, and metrics are obviously untouched.
Any thoughts on that approach?