Dragon: White plays 0-0, f3 and Nd5

Here's the position after 12 moves. Only four games on chess.com master database have reached it and in each case white captured on f6. 

White hasn't exactly achieved a winning position, but if you want to avoid allowing white the solid pawn structure with pawns on e4 and c4, you can sac the exchange. Bxc4 Rxc4 b3 Nxd5 bxc4 Nxe3 Qxe3 Qc7. You can a pawn and retain the bishop pair for the exchange. On a board with open diagonals and not open files, your position is equal there.

Loomis's line is ok for black, I think equal but white is not forced to take on c4 and may just play exd5 and will get the pawn structure you are worried about anyway but I think in that case the position is still roughly equal. I think both positions are playable from either side..... 

Thanks for your comments. Thanks, Loomis, for the exchange sac' suggestion. I didn't even see it, let alone consider it. Another weakness I need to work on.