1. No sync in background so my iPad, my iPhone and Mac are always unsynced. The sync process is too long so when launching the app, you see undone tasks which have been marked as done on an other device.
2. The iOS8 widget is a nice pretty surprise but you dont really what it shows you. I have 9 tasks to complete (2 flagged and 7 dues) and the widget tell "no item".
A "add item" button could be really nice in the widget to add tasks without having to launch the app.
3. Recurrent tasks are still too poor. Unable to set a task on the last Thursday of each month !
Still waiting for Things 3... (even if I have paid for OF2 on Mac, iPhone and Ipad+InAppPurchase)
potskymac about OmniFocus 2 (legacy support edition), v2.3.1