Hi antoinebugleboy - Good ideas. You should post them in the Ideas forum for people to vote on.
https://www.rememberthemilk.com/forums/ideas/

Though not quite the same, when you create a task in the web app, there's a link that appears at the top of the window for a few seconds that allows you to go to the task you just made. But having a way to go to it after that link disappears would be good.