Well you are inserting a different question altogether then about whether you're allowed to buy in a lost year or not, But its usually a pretty slippery slope to the "we're not x player away" arguments. You do have to add good players. The remaining games still do have value.
All the said, I think Sweat's value to a high second IS highly suspect. I just don't think the broad sentiment against trading picks to get very good players. To compound that and say, "well Moore was a good example and this isn't" ehhh. They're probably a lot closer than you're giving credit to.