hi. the QR scanner that build in in the browser is very good. but it is a double job for open the browser 1st then press on the very small icon to go for the scanner.
suggest to make an android widget for open scanner from home screen.
Add quick action buttons, like in Quick Access (I suggest even more buttons to add Print/Save as/Full screen/Find.. Snapshot is not necessary as it seems)
Make sections collapsable. The same story was with Quick Access feature, not all users need top sites (I'm afraid that most don't need)