RE: I think we lost some 'frequent' top level contributors
I think it means most people don't want a second job of having to manually run the RC system instead of just having sound rules.
The people who would most need to put themselves forward are less likely to come across the invitation to or be able to comment to act on it.
I think one thing that keeps getting left out is the experience of the person who just joined Steemit or one of the other dapps. They don't know what's going on yet. They aren't in discord servers. They aren't following witnesses or even really knowing who they are. They just know that they can't do much on here before it says they're out of power. They don't even know when they are supposed to come back expecting to see it changed.
The red/blue bar STINC is using to highlight their posts to the entire community is good. I think anything speaking to real newbies to invite them to request more RC delegations should be in the comments on whichever of those posts is currently in the top bar, and folks should use self-voting to make sure their comments along those lines wind up at the top of the considerably long comment thread on those posts. And a way should be included to respond that doesn't require any RCs.