Is there a to-do list / task manager with such features?

Question

Time Management

Good afternoon!
Once again, I set out to search for a convenient program for managing daily tasks. There are over9000 of them, I tried a lot, but then one is not, then the other. Ideally, it should look like this:
1. Tasks are stored in a tree-like hierarchical structure. Ideal examples: LeaderTask, MLO. It would be nice if the tasks of the highest level were separated into a separate interface element (like Categories/Projects in LeaderTask)
2. Tasks have the following parameters
- Start date (available almost everywhere)
- Deadline for completion (available almost everywhere)
- Specific completion time
- Estimated duration of execution (met only in MLO)
- Context
- A priority. Ideally, the priorities should be dependent (as in MLO), but a prime number will also suit.
- An arbitrary number of labels (labels / markers in LeaderTask)
- Repeatability
- Dependence on other tasks ("Until task A is completed - task B is inactive", available in MLO)
3. Calendar view in which you can drag tasks back and forth (as in LeaderTask)
4. A single inbox where you can push everything in a row.
5. Some "automation" of scheduling. Here are the options (in order of preference):
- Tasks with set hard times (eg "meeting", "lecture", etc.) are set in the calendar. Active tasks without a hard time reference based on the estimated duration, dependencies, context, deadline and priority are automatically stuffed into the remaining empty spaces.
- "What to do next" function. Depending on the estimated duration, dependencies, current context, deadline date, priority and remaining free time, several tasks are offered to choose from, which are best done next (for example, "from the same context as now", "can be done before the meeting, which is in 30 minutes", "this task has a deadline soon", etc.
6. Windows, Android platforms, automatic synchronization.
What programs have I tried:
1. LeaderTask. I have known the program for a long time. Dissatisfied for reasons: tasks cannot be assigned an expected duration, there is no automation. The Andorid application is quite sad. A little pricey, but within reason.
2.MyLife Organized. Closest to ideal. But a slightly crooked interface, the lack of a calendar, and an extremely expensive price (4k rubles for the pro version only for the desktop) prevent us from using it.
3. GTD services (Nirvana, Asana, RememberTheMilk, zengtd, etc.). Inconvenient and inflexible, there is no automation.
4. Based on Gantt charts (MS Project and free analogues). There, tasks do not have tags, and in general, programs for managing projects.
Please help me find the closest program to the one described. Thank you!

Answer 1

There is an interesting task manager based on jabber - jodo.im. Hierarchy is well done there. And I did not meet all the set you need.

Answer 2

There is a good application conqu , there was an opportunity to put blockers and drop unsorted tasks in the inbox, but naturally not all of your requirements are implemented.

Answer 3

I use MLO. All of the above is there in finished form, or can be customized, including the calendar. The interface is being finished, although updates do not come out often. The price is now reduced, as far as I understand - less than 2000r. Sounds like a good opportunity for you.