Weekly/daily challenges

So I just thought of something that could potentially be fun, weekly/daily challenges presented by the mods/members of this subreddit. I feel like every week we can come up with some kind of challenge for everyone to attempt. We can then all talk about how far we came or if we beat the challenges via the post. What do y'all think about this? Stupid idea? dumb idea? better idea?

I CHALLENGE Y'ALL TO BEAT BOSS RUSH STAGE 4 WITH NOTHING BUT SAIBAMEN (okay maybe not that, but you get my point)