And I see yours. Indeed, when possible, using one’s personal “groove” is certainly the best way to add expressivity, movement and feel to a rigid beat.
However, this is not at all what we’re talking about here. We’re not discussing USER generated sequences, but AUTOMATED sequences ( like arpegiators and rolls / retrigs). In the case of automated note generation, “your own natural swing” does not apply. The machine’s timing takes over, working AGAINST you “own natural swing”. That is the problem, and one that is very noticeable once you start bringing the Swing amount up and rolls/ arp just go out of time.
So, to be very clear, the Elektron range goes against your natural swing, by not allowing you to make automated sequences follow any kind of groove, natural or not. Any automated sequence is rigid, where every note is exactly equidistant from the ones around it. There really is no explanation as to why that is, and Elektron will never answer to it in any way. Which is what I find baffling.
Most of my time is spent teaching Elektron gear. I love it, the workflow, the sounds, the ergonomic, the stellar build quality, the fact that one has to rely on their ears and not a computer screen. I know that the music I make has been influenced in many ways by the kit I’ve been using over the years, and most of it is Elektron. This is why I would love to get down to the bottom of this and understand WHY they did this. It’s not because I want to trash them. It’s not because I’m unhappy. It’s because I’m genuinely curious. Curiosity leads to exploration, which leads to discovery, and learning. I’m convinced that in the process of finding out why they refuse to swing arps / rolls, I WILL learn something.
Regarding the recording of retrigs, it’s in the manual, so I have no doubt that some time in the future, this function will be implemented. In the meantime, I suppose the easiest work around is to lock retrigs to trigs, it can be tedious, but it’s a workaround, for now 
Cheers !