I personally think that spoilers could be quite useful, especially when new games come out, as people could put things in spoilers to prevent spoiling the game for other people. Occasionally, I can figure out a way to reword a question/answer so it doesn't spoil things, but there are more that I can't reword than that I can reword.
Also, I think that tables would be useful, as I have, multiple times, been answering a question and had to take a little bit longer to figure out how to do it, when using a table could make it much quicker.