My key issue is working offline, if I could make that work in a convincing way with good usability that'd be ideal. You can still only store 5mb in local storag

My key issue is working offline, if I could make that work in a convincing way with good usability that'd be ideal. You can still only store 5mb in local storage, so you can't sync a load of data to the device and allow the user to use it in the field. Also, there is now a 7-day age limit for data in local storage - I understand why this was done (for user privacy) but it just makes things more hostile for developers attempting to use it in a legitimate way.