The tl;dr version of why this would be an abomination as a ranked mod is that changing map settings changes the map in ways that mean you're no longer playing the same map. Well, that's true in the case of CS and AR anyway. OD, as I said in my previous post, could in theory be something that gets modified fairly by a mod, but assigning a value to it with the current scoring system would be awkward. HP increase couldn't give you bonus points and still be fair, HP decrease would need to be treated as NF in order to be fair. The reason HR is okay (and I don't think it's well-designed at all, but I don't think it's bad that it exists) is because it's consistent. Either you play the map nomod or you play it flipped with circles at a set size, OD set to a specific number, AR set to a specific number, and HP set to a specific number. Having this as a ranked mod would be a mess of choosing just the right difficulty settings to take advantage of exactly where difficulty spikes either objectively or for that specific person. It would not be possible to make it fair because of how different it would make maps. I want this as an unranked mod because it would be fun and there's no reason not to let people play whatever they want if it's unranked.
There is no such thing as aim that is purely physical and that's the point you're missing about real vs artificial difficulty of AR. If you wanted to minimize the reading difficulty of aim, you would need to set literally every map to AR10 and I can pretty much guarantee you that would not be comfortable to play. The ideal AR for a map for a certain person will balance out the skills required, not minimize either one. If the reading component of aim is "artificial difficulty", then maps you find comfortable to play are comfortable because of "artificial difficulty". You're hiding behind that term and it doesn't mean what you want it to mean. The reading component of aim is necessarily a real part of aim.
There is no such thing as aim that is purely physical and that's the point you're missing about real vs artificial difficulty of AR. If you wanted to minimize the reading difficulty of aim, you would need to set literally every map to AR10 and I can pretty much guarantee you that would not be comfortable to play. The ideal AR for a map for a certain person will balance out the skills required, not minimize either one. If the reading component of aim is "artificial difficulty", then maps you find comfortable to play are comfortable because of "artificial difficulty". You're hiding behind that term and it doesn't mean what you want it to mean. The reading component of aim is necessarily a real part of aim.