I can't really say I found this thread educational. Sorry.
In the end, amino acids are important, and so is protein content and fat content. Some amino acids will cause limiting factors. How do you tell which one is limiting? How do you tell the protein content? Either take the producer's word on the facts and do some math, or order an expensive test. Too much work for me. I suspect most hobby beekeepers are in the same boat. If I had 500 colonies to feed and dropped a few tens of thousands on feed per year, that might be a different story.
Each producer spends plenty of money on research to make their formula better. I'll gladly pay them for that, rather than do my own "research" all over again.
As far as making my own (from scratch), I'll follow someone else's formula, then maybe make slight changes, but if it involves starting from total scratch to calculate the composition of amino acids, I'm better off purchasing a commercial product and following their instructions, then compare with a competitor and see which one gets consumed faster.
Thanks for the formula Lauri. I might end up trying it this year. Might end up trying Randy Oliver's too. But if the formula isn't shared, I'm not likely to create my own.