The first year I did it I was all about numbers but in subsequent years I think the greatest value in it is how it forces your brain to spend more time in a poetic space, learn and try new things, and to push yourself to try when you would have otherwise given yourself a pass, which often results in excellent drafts.
I have to say I am edging near to the limit of my capacity and a little burn-out though, so will definitely need a breather before coming back to anything! My brain is still itching with a couple of the prompts I haven't used as well so I'm hoping I can get something drafted on those too before I stop.
It is a lot, but it's been brilliant having so many people to share it with. I feel a lot more inspired like this and LOVE reading other people's work as we progress.