As for #3 on Jul 4th list... I can see how it may be confusing that you're able to press the x10 button, but after you figure out that it will only buy as many as you can afford, it's useful and not confusing. Once you know how it works, you sometimes use it, knowing that you'll only get 5 or 6 and that's fine.
Thanks for spreading the word FLCoder!