I agree that we probably don't see DT (as well as a cover based Safety) as a sexy headline position to draft, though to be fair there's not been many complaints about the 1st round picks of the last few years.
Id argue that LG was a greater need due to: the penalties, lack of running game and pressure on Dak.....and I was someone who loved the focus on defense in the last draft. Our Defense is designed to keep us in the game....the resources pumped into that Offense means it needs to burden the strain. I would put a proviso, that i wouldnt pick a LG or any player for that matter if there was better value on the board (in a position of need).
As I say if we were one player or had just one weakness then yep no problem trading up for that DT (certainly a position of need), but we need more than one success per draft and therefore can't afford to lose draft capital by trading up ...imho.