Setting to Opt Blocks In/Out of the Randomizer
Add a setting to the Block Manager for each block to opt them in or out of the Block Randomizer. This would give admins a bit more flexibility if they wanted to see Flesch-Kincaid all the time or only wanted to see Similar Content sometimes. Only some types of blocks should be random-able though. It wouldn't make sense for the Search box to be random, among others.