Allow goals to become "moving targets"

Here's the scenario:

You set yourself a goal: "Less than 1 hour on News/Blogs a day".

OK, no problem. But after a week or so, you realise you are hitting the goal easily every day. Now you have to go back and change it. Maybe now you input 50 minutes -- or 45.

But wouldn't it be great if you could say at the outset: "Less than 1 hour on News/Blogs per day, dropping to less than 20 minutes in a month".

Now RescueTime can just adjust the goal as appropriate, making it harder and harder for you to attain.

Obviously, positive goals can work the other way: "Minimum of 10 minutes daily on learning Chinese, rising to 30 minutes in 6 months".

I think it would be easy to implement: you just need "Start" and "End" goals. The start goal would be what we have now, and the end goal would be a new one. If you don't want a time-based change, you just leave the end goal blank.

(Extra:

What would be even neater is if RescueTime did the change for you, automatically.

Like: "10 minutes per day on Chinese, and please increase my time slowly if I keep meeting the goal. If I don't, keep me on 10."

I'm not sure how easy that would be to implement, but it would rock as a feature.)

So, what does everyone think?

(I'm off now to set myself a goal of "No more than 20 minutes on getsatisfaction.com per day ;-))