Allow users to specify/adjust road width
I'm noticing that, after I derail, my road width gets larger than I would like it to be. For example, I had a graph with a 120pt road width (+60 and -60). I got into the wrong lane and then derailed pretty hard the next day. Between my wrong lane value on the one day and the value that caused me to derail on the next day, my datapoint was +179 from my centre line. When I rerailed my goal, the road width became 358 (+ and - 179 from the centre). This means I can now screw up, DAILY, by the same amount it took me days to get to the points of screwing up. Yikes! I would definitely like to readjust my road so that it's back to the original width of 120pts.
This doesn't just apply to rerailing situations. Let's say you want to track your calories and set a 2,000 calorie limit. You start at a daily rate of +2000 with a "set a limit" framework. Now you have a goal of 2,000 daily, but you're road width is 4,000! I noticed that I took advantage of the extra width and snuggled right up against my upper limit pretty quickly, which defeated the purpose at least a little. Sure, I ~should~ be aiming for the centre line, but if I were good at that...... In this case, it would be great to have been able to specify a goal of +2,000 daily and a 400pt road width.
I can think of several other examples: I want to clean out my stuffed inbox and start by deleting a large volume of emails every day (say 50-100), but reduce how many I have to delete as it gets lower and lower. Yet, as the road rate drops, the width stays the same and so I can allow it to get really out of control, proportionally, as time goes on.
Also, I would rather give myself an ambitious goal and a thick road, at first, than a moderate goal with a thin road. Over time, reducing the leeway would force me closer and closer to my true goal, while still allowing me to aim for the true goal right from the start, rather than aiming low and cranking it up as I go.