The arbitrary "Measured Within" setting for goals seems highly restrictive to me. What if I want a 15-day goal? Or a 3 month goal? Seems like it would be more flexible if there was a start date, and an end date, that could be set to whatever, or not set at all for open ended goals.
I just bought new running shoes and went in to setup a goal because I thought it would be a useful way to remind me when to starting thinking about their replacements. I wanted an open ended goal of 500 running miles (with no restrictions on when I'm supposed to get there).
Unfortunately, the developers who built this feature don't seem to think that anybody should be setting any goals more than 30 days in advance. That's what I call having a supreme lack of imagination.