Unfortunately I think they're trying to fix the wrong problem. The WordPress Admin area needs a refresh (as alluded to in a separate Tavern post, coincidentally). Lots of plugins add their own top-level Admin menu option (JetPack used to do so as well); I have two with blue icons, which don't stand out well on the solid brown menu background I have. To save space I minimise the Admin menu, then have to guess what each non-core icon is for.

A theme might have subpages, it might not. Do the ones that don't need a top-level menu still get one? How long will my Admin menu get?

Is there a better way to divide/present the admin area; say core and non-core, or front-end (content, themes) and back-end (settings, plugins), with upsell notices done the same way as the News, etc panels which can be turned off?