Depending on how things work out, I'd actually consider trading down in the right circumstances. For example, if we end up with pick #4, and we could somehow swing a trade that lands us #6 and #9 or something like that and enables us to draft both D'Angelo Russell (who I'm starting to fall in love with), and Myles Turner (who I can't figure out why his stock is so low given how productive he is) I'd consider it. Obviously that is a very specific circumstance that would require a lot of luck in terms of our draft positions as well as other teams, but that 2 player combo is one I'm intrigued by.
I don't think it is very probable that we could actually trade up into the top 3.