This is more comment/request than question. The lack of support for offline mode is quite problematic for anyone who travels. Sitting on a plane is a great time to reflect on things to do. I love todoist, but I will sadly leave soon if offline support does not become available.
I should note that I would be happy to use an iPhone/iPad app to work offline. However, I have not found anything reliable. Doings is apparently quite problematic, doing more harm than good lately, based on current reviews. I also found Todoist Wall, but could not get this to work after multiple attempts on multiple platforms using password or web api key; login appears to succeed, but nothing is synced.
I'm preparing for a vacation flight, with many tasks to organize while in transit. Instead, I will be doing that organization during my vacation time. Hoping for a better situation soon, else...gotta move on to another task manager.