A task that I was reminded to do had important information in its description necessary for me to do the task. When prompted to do it I selected the focus mode to get it done, but since the information in the task was not available to me, I actually had to quit focus mode to go get that information.

I appreciate the desire to have a minimalistic focus mode to help people work solely on the task, but tasks are done with context and that context does need to be provided.

Furthermore, if a task has subtasks or a checklist I would expect to be able to see that as it would prompt me to do those things. Plus give me the opportunity to tick them off when I had actually done them during the focus period.

This! It's so annoying to create a task with a plethora of sub tasks, only to be reminded of the whole task.

I don't want to cross off complete tasks if there subtasks left. I want the possibility to cross off subtasks when being reminded of a task.