User blog comment:DaNASCAT/Technical Update: May 6, 2015/@comment-1776824-20150507235001/@comment-3388044-20150510194122

There is indeed a lot of blank space.

But, I think that, for now, that is meant as filler for other items that are to be added to Insights in the future. That way, the overall box is currently occupying the approximate space it will still occupy in the future when the module is fully loaded.

Or, at least that’s my guess.