Can I customize which Query \ View is shown after adding a new task?
Currently, every time I add a new task and save it, my list view changes from my custom start page and it switches to show all the tasks associated with whichever project to which I just added a task. I'd much rather have it add the task to the appropriate project and just leave my view as is. Any way to set that up?
if you enter a particular project and use the "Add task" link at the bottom, you'll be able to add multiple tasks and the current view will not be changed.
However, using the "Quick add" option will indeed redirect you to the project you've added the task to or, if you use a due date, to the view of the day you've used (there is currently a bug with this option and it redirects to +1 day, but we're working on it right now).
This will allow you to instantly see the tasks in the particular project/day and make sure that the newly added task won't collide with other things you need to do at that day or for that project.
It's not possible to change this option right now, but you're welcome to add a suggestion/feature request to our Votebox: http://todoist.com/Vote/