First cut
1) I'm not sure how  to look it up, but this lectionary passage just begs to be extended into v. 14, especially if it is not read at some other time.

2) This sends the advice Jeremiah has for the home folks to exiles in far off Babylon, present day Iraq.

3) If I were a recipient of this letter, part of me would call Jeremiah a version of Marshall Petain when France was overrun by Hitler's forces. Why would I seek the welfare of the land of the destroyer? what hard advice to make a life in exile and turn one's back on the return. On the other hand, Palestinians have lived in refugee camps for generations in fruitless waiting to go back home.

4) As a different approach, this is classic bloom where you are planted advice. It is also a good stand against those who counsel not working toward the good, indeed looking for signs of decline only, in some sense of trying to hasten the Second Coming.

5) The new Christian Century has a good piece on the futility of trying to find a specific "plan of God" for one's life. I would go further and call it using the faith as a fortune -teller.

6) what good news, to hear that God has plans for their welfare after the vistas of destruction, (see 18:8, 36:3) for instance).

7) What sort of future would you like to see for: your church, your country, your inner life, the lives of your children?

8) How do images of the future, good or bad, affect one's current action or inaction?

9) Miller has a good section in #4 of the NIB commentary at 796 on the "paradox of divine activity in Scripture."