I think if I were ever to swap back to commercial mixes I wouldn't use pellets. They're just really not that necessary when freeze-dried animal proteins do so much better at boosting protein and tend to be much more appetizing anyways.
For homemade mixes, though, I strongly agree with Lillias's argument, I really don't like suggesting using a homemade mix without commercial supplementation. Put honestly I really hate this idea that mother nature has it in good for us...if that were the case things like radiation that are naturally toxic wouldn't exist. (Obviously mother nature is a metaphor...anyways) We take what she offers and tweak it to our needs.
Life is naturally guided to continue the species. Every creature on earth including viruses have a will to live and procreate. I'm always confused by people that say nature is not as good as manmade for us but everything we do is taken from nature, everything we know is taken from nature, man continually tries to mimic nature and fails, with many times major unintended consequences.
Like, yeah, literally injecting smallpox into yourself might make you immune to it, but I'd much rather get the lab modified vaccine, you know?
Nowhere in nature does one inject themselves with anything. You would contract it through your bodies natural filters and then your body would fight it off. Injection can be extremely dangerous because it bypasses all your bodies natural defenses and alarm systems. If you inject yourself with anything, it's from a lab and as many studies have shown, it's not nearly as effective or long lasting as natural immunity.
We only know so much, hence why we look to nature so often since evolution did a pretty great job with that, but from our understanding of our world we can also see what's wrong with it and how we can improve it.
What makes you think humans are that smart that they can improve on nature? When many times, things have ended up worse than they started. Most of the most innovative things we have done are by copying the world around us. Many of our skyscrapers and massive accomplishments we have because we mimic a natural form. Yes we are blessed with a form of creative intelligence but more times than not that creativity ends in failure. Only once in a great while do those innovations end in a net positive.
That's how I see pellets: as the ideal blend of nutrients to sustain life, specifically tested to be a sole source of nutrients to sustain a healthy animal. A tweaked version of their natural dietary needs. Personally I'm of the belief artificial supplements work (sorry, no one is going to change my mind on that, just putting it out there), but in any case that doesn't really matter since all I care about is a healthy pet. Can they live for 2-3 years on a pellet and avoid nutritional deficiencies? Great! That sounds good enough for me.
How do you know what the ideal blend is? Most lab animals never live past a single generation because they are killed off for scientific experiment. Mother Nature has thousands of generations on it's resume. The major issue with lab made supplements, is it will literally create deficiencies after long term use. You cannot separate things like Vitamin E from the cholesterol the body needs to process it. Taking massive iron pills only works for about a month until your copper and zinc stores run out, then you are just creating a toxic pool of heavy metals in your liver. You can take all the Vitamin D you want but without the sun and cholesterol to process it, it's never going to do anything. The only way to get these things in balance is to eat high quality foods. Also, blood serum levels does not equal your body's receptors’ ability absorb those free floating minerals. There are much more expensive testing that can be done to find out, for example, your active vitamin B12 levels, but those aren't going to be done on lab animals.
Trust me, I really love the idea of feeding a natural diet. I don't think it's necessarily nutritionally superior, but for variety's sake it's just so much more enriching. But, like Lillias said, I just don't think homemade mix creators really have the money or resources to get constant testing of our mixes, so I'd prefer to outsource that to a company that does. It just puts a lot less pressure on the maker in general I think. 
People outsource a lot of personal responsibility to companies and look where that's gotten us. Obesity rates through the roof, with tons of deficiencies that conveniently you have to buy more supplements to "fix". Don't hand your health or your animals' health over to a company that faces zero repercussions for selling you a mediocre product. As long as they don't tell you it does something it doesn't, they can sell you pretty much anything. Most companies are LLCs, meaning the companies themselves have very limited personal responsibility for what they do. They can bankrupt the company and then go about their day and start up a new company the next. I'm not trying to pick on you with this but that's pretty concerning that you are one of the most trusted people on this site and a lot people buy your mix, but you don't even have faith in your own product. To stand by it and say if there's a problem, I'll fix it, instead of saying, if there is a problem, I warned you. It may be a lot less pressure for you, but what about your customers? Unfortunately, that's a bigger problem with most companies and it's why we have all problems we do.
You're a kid making money on the side selling hamster food, I get it, it's not the end of the world but you should think about what kind of future you want to live in.
