Your name kind of states exactly how I feel about this trade...
First off you want to give up our pick, David Lee, an expiring/team option contract of 15 million, Rozier, and Young for Thaddeus Young, (who honestly hasn't proved anything except he can score on bad teams,) and Lopez who has been labeled injury prone like 2 years after he came into the league.
No thanks.
No.
No.
No.
Terrible trade for us, and it even gives the Nets incentive to just go ham and fire sale everyone not under 25.
Lopez is injury prone indeed, but when healthy he's one of the best centers in the league. As to Thad, it isn't his fault he's always been on bad teams. But he's made an impact everywhere he's been, on both ends of the floor. He's a plus player for sure, just not a star like healthy Lopez.
And as to what we're giving up, think about it this way: say the trade causes the Bkn pick to go from #6 to #2. How much would you give to trade up from #6 to #2 in a top heavy draft?
I wouldn't do the specific trade listed for a number of reasons:
1) I think Young is about on par with Lee, Johnson and Sully - so he wouldn't really be an upgrade at PF
2) I think Rozier has the potential to become a better player than Thad Young ever has been (and ever will be) so I'm not willing to give up Rozier for a guy of Young's calibre
3) Although Lee may well not even be on this roster after he season is done, I think he's presence on this team will indirectly impact our future in a big way. I say this because I think Lee is going to add a significant number of wins to this team, and I think the Celtics position within the East is going to have a major impact on the team's appeal in the next free agency
4) I worry that Lee makes Brooklyn significantly better as a team, which hurts our pick this year. I worry that giving the nets Rozier is giving them an olive branch (since nobody else on the team has any real upside) and puts our future Nets picks at risk.
So for all of the above reason, I wouldn't make that trade, or any trade that involves us getting Thad Young at PF.
BUT
We desperately need an upgrade over Crowder at the SF spot, and Thad Young would be a major upgrade over Crowder. We also don't seem to know what to do with Sully, so trading him helps us. I'd be happy to offer the Nets a deal of Crowder, Sully and James Young in return for Thaddeus Young.
The salaries seem to match up, and this probably helps the Nets since they are so bad at every position (bar center) that this deal probably makes them better. A starting lineup of Jack, Johnson, Crowder, Sully, Lopez looks much better than the rubbish they are putting out there right now...and given they have about ZERO upside on their roster, getting three <26 year old guys doesn't hurt.
If they accept that deal, i'm happy. It makes us much better. If they don't accept it that's fine - Thaddeus Young really isn't that great, so I wouldn't lose any sleep over t.