Better mobile web optimization
When on a mobile device I very often use the FamilySearch web interface. It has features the mobile app lacks.
Many FS web pages do not display well on mobile devices. Especially the pages with pop-ups. A new page in the browser would be preferable, both for navigation and because the new content can be rendered in the background, not while the user wait.
I spend the most time on the historical records search interface, because the web interface shows me which records are attached to PIDs and which are not.