Filter task list by tags, depending on the context or the situation (Specially in widget, see imagen)
The only thing that BC lacks in order to manage with the GTD method is to filter the lists of actions by situation or context tags.
I have edited an image of what this would look like in the widget, you can see it in https://ibb.co/g1rSUy. Each icon in the top bar can be pressed or not, thus showing the tasks with that tag or not respectively.
The first bar icon could be "select all / deselect all"; and if the tags are many, one could scroll horizontally.
A filter by tags is not an optional feature, it is essential, and that is why many task managers already have it.
You can reverse this disadvantage by being the first to add it to the function of the widget, standing out from the competition.
Darius Schindler commented
it would be Amazing so I would switch from Todoist to BC2 completely :)
Totally agree. I love the design you did. That would be very practical and useful.