Hi Jacob, welcome and happy to hear you are enjoying Huel Black Edition! 
As David mentioned, these topics have been addressed previously, but I thought I would give you a brief overview here!
Making an organic product at this time would be more expensive and we strive to make food that is nutritionally complete while also being affordable, good for you and the planet, and time saving!
We use cyanocobalamin as it is vegan, more stable, and better absorbed. I’ve linked the page here where we discuss this as well as the other vitamins and minerals in Huel and why we chose the versions we did!
Sunflower oil provides omega 6s (which we need) as well as a couple vitamins! This page goes into greater detail about the main benefits that I mentioned above, it discusses sunflower oil generally, as well as sunflower oil’s use in Huel.
We have looked into algal oil but due to the amount that would need to be added to achieve adequate amounts of DHA/EPA, the taste was the biggest barrier. We currently use flaxseed which provides Huel with both adequate amounts of DHA/EPA through conversion of ALA as well as palatability. See here for the more detailed forum post on that!