Everyone has such a unique experience with streaks that we’d never reach a satisfactory consensus. It’s not even clear what the “right” decision would be if the Bunpro staff were to make it on behalf of everyone.
I personally hate streak counters. I’m well enough motivated that I don’t derive use from it, but there’s always this small, completionist voice at the back of my head that urges me to do a couple reviews after midnight just in case. I’ve also debated breaking it intentionally, but I don’t want to skip a day of studying when I have the time for it. It’ll happen on its own anyway, as other important things come up in everyday life.
I’m very much in favor of “Days Studied”, personally, but reading through other people’s replies, it doesn’t fit everyone. At the very least, letting people hide the streak seems good - out of sight, out of mind.
The other suggestion of having “Largest Streak” is something I’ve also been thinking about. While you’d still be left at 0, it gives people a goal to achieve and surpass, which, if you don’t have any other, would be a reason to pick yourself up and start over. Everyone draws motivation from different sources. If you achieved a positive goal, it doesn’t matter what you used to “trick” your brain into doing the work that needs to get done.
What I do like on the dashboard is the Review Activity chart. That reinforces the thought that I’ve not only been doing well for the past month, but I’ve also surpassed a given daily baseline - be that at least 100 reviews, 50 reviews, or what have you. Given that I do big cram sessions I’d love to have one of those charts for it as well. It really emphasizes the work you’ve been putting in.
(As a side note, I also think that the colors for Reviews Done Per Day in the stats page are counterintuitive/reversed. I don’t see it as red=bad, but darker=more and lighter=less.)