Perhaps 5. Rxd8 Rxd8 6. fxe4 Then ... Rd4 gets interesting

A very sharp position! I guess looking at this I would tempted to play 1.g6 here to undermine e6 pawn which in some lines is threatened with Bxe6 with check winning an exchange of the rook at c8. Mostly, though, it is because I can't see anything better for white. Just a quick line as I see it-

1.g6 hg6 2.hg6 de4 3.gf7+! Kf7 (forced) 4.Qf4+! Nf6!

And here, I am not really sure at all how to proceed. My first thought is 5.Rdf1, but then black just plays exf3 and the f-file is closed up because of the bishop on b7.

Additionally, white might try 5.fe4, but then 5.....Rd1 6.Rd1 g5! looks ok as far as I can tell for black. I have to think about this a lot more than I have time for tonight.