On your analysis of the rules, I don't think it is accurate at all. If you look at many of the RFDs moderation has upheld, you will find that they don't require nearly as much work as you seem to think. Basically, the rules require a thoughtful, written reply that assigns points for how things interacted in the debate space and not based on superficial evaluations. When I write an RFD, I put in about 20 minutes, tops. I am sure you could do it in less time than that, depending on how quickly you type and process the arguments in your head.
The point is that the rules, as they are stated, are unclear (too subjective) and enforcement appears to be arbitrary.
I've noticed that if I give detailed reasons (focusing on formal logic) for what I believe are the key arguments (statements that related directly to The Debate Resolution Itself) I am invariably accused of citing outside sources or loading the RFD with personal opinion.
And when I quote specific arguments and counter arguments which I believe speak for themselves, I am invariably accused of not adequately explaining my "reasons".
And if I mention a specific logical fallacy, I am invariably accused again of citing outside sources.
Rule number one, "This survey must be comprehensive, which is to say that it must survey all or most of the main arguments in the debate" - this is particularly unreasonable.
I've seen many RFDs that are left standing that do not meet these requirements and many that are struck down.
There doesn't seem to be any consistency one way or another. Even the mods seem to inject personal opinion into their decisions to remove a particular vote and then let another similar vote stand.