Hurto11 having it all even if cut into separate parts, will mean very long videos and shoot times which is not always possible or something a studio is willing to do/ invest in.
Having scenes short/normal length and squeezing in all positions will mean you can't just stay in a single position and have to realign constantly which is a huge pain in ar.
In short I don't think this solution is very feasible at the moment apart from a few extra effort special scenes. Besides, putting in everything every time makes things very formulaic. For comparison, just look at multipart JAV scenes, those dont have all positions either and are often extremely long combined runtimes.
