Regarding the Continuous Call For Papers Review
Perhaps an additional scale could be helpful: Whether the proposal is well written / has good quality?
Some topics are well written and could be great to others than me. For instance … mind-maps … I know about that, so scoring it “not interested” isn’t a sign of a bad talk. Similarly the topic may be “shut up and take my money” but less well written/articulated.
Enjoy looking into the proposals!