I put it as 3 because I think implicit conversions cause a lot of issues, waste time, and I see a lot of questions on these. So it's important.

I may go back and "re-rate" some questions, moving some 1s to 2s and 2s to 3s or 4s, trying to weight them a little more when you have to think. I'll adjust points for correct answers as well if I do.