Not exhaustive, not fully-fleshed out, but here's a braindump on what I believe helps sustainable front-end development. Oh, and there's 12 tips, so you can ignore the two controversial ones if you want!
You know the scenario - you want to list nodes that have the same taxonomy term(s) as the node you are currently viewing. Easy, but you also want to exclude the currently-being-viewed node from the list. Always trips me up.