Which openings lead to unbalanced endgames? Some openings often lead to "unbalanced" endgames, where both white and black have their advantages and disadvantages.

For instance, in the Berlin endgame, white has a lead in development and a better pawn structure, while black has the bishop pair.

Are there other openings in which one of the (main) lines results in an unbalanced endgame?
First note that it is impossible to force your opponent into an endgame - chess doesn't work like that. Second, strategically the endgame may be one of the better choices for the opponent eg in the Berlin Defence the consensus on White best option is between the Berlin endgame and the Anti Berlin 4.d3, or equally it may not be, which doesn't mean you can't play it anyway if you like endgames. For examples of opening ideas that lead to unbalanced endgames see the games of Kramnik for example 

Kramnik-Timman Wijk aan Zee 1999.

  [StartPly "7"]
  [FEN ""]
  [Event "Wijk aan Zee"]
  [White "Vladimir Kramnik"]
  [Black "Jan Timman"]   

1.Nf3 c5 2.c4 Nf6 3. Nc3 Nc6 4.g3 d5 5.d4 cxd4 6.Nxd4 dxc4 7.Nxc6  Qxd1+ 8.Nxd1 bxc6


Kramnik-Van Wely Wijk aan Zee 2001

  [StartPly "7"]
  [FEN ""]
  [Event "Wijk aan Zee"]
  [White "Vladimir Kramnik"]
  [Black "Loek Van Wely"]   

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.cxd5 Nxd5 6.e4 Nxc3
7.bxc3 c5 8.Be3 Qa5 9.Qd2 Nc6 10.Rc1 cxd4 11.cxd4 Qxd2+
12.Kxd2


Kramnik-Tomashevsky Tal Memorial 2012

  [StartPly "7"]
  [FEN ""]
  [Event "Tal Memorial"]
  [White "Vladimir Kramnik"]
  [Black "Evgeny Tomashevsky"]    

1.Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 a6 5. e3 e6 6. Bd3 dxc4 7. Bxc4 c5 8. O-O b5 9. Be2 Bb7 10. dxc5 Qxd1 11. Rxd1


All of which won by White. These games are main lines - at least the last two are. I'm not too sure about the English opening in the first game.