Looks like Google Tasks is scheduled for some improvement:
For the next few weeks, we’re running a poll for Tasks feature requests. We really appreciate the feedback we’ve already received about syncing, sharing, Calendar integration and more, and we’re looking forward to hearing more details within these topics as well as any new requests you have. The poll will remain open until November 19th, at which point we’ll take a careful look at all of the feedback and prioritize your requests.
I would love to see this as a standalone product, and I would love tags and location contexts, so that I can force my GTD paradigm onto it. Until then, you can always use “Canvas” view.