16MB still seems massive for this kind of app. I ran Visual Studio 4, not an app, but an entire app factory, on a 66MHz 486 with 16MB RAM. And it was snappy. A TODO list app that uses system UI elements could be significantly smaller.

What do I gain if more developers take this approach? Lightning fast performance. Faster backups. Decreased battery drain => longer battery service lifetime => more time in between hardware refreshes. Improved security posture due to orders of magnitude less SLOC. Improved reliability from decreased complexity.