I agree, the ability to automatically follow someone would be helpful.
Yes, but that isn't the same as having a new tab on my home page in addition to "For you", "Featured", and "All". I am suggesting adding "Following" that would show what you're pointing out I can already see if I click to their profile. I would want to build a network that shows me what I want without having to click through each person's profile to see if they've posted anything. That would be both tedious and limiting wrt how many people I can reasonably follow.