The team is playing well, and Marrero and Lin are a big part of that. Do I expect Marrero and Lin to be the long term solutions? No. But as many have said, if it ain't broke, don't fix it. What's the rush in making a move for 3B when things are going so well?
I am positive that Dombrowski is working on trades to improve this team. 100% positive. It's easier said than done though, when so many teams are still in contention. It would be unwise for Dombrowski to make a rash move right now just for the sake of making a move, because there is no urgent need. The deadline is still almost a month away.
Yes, be patient.