Move sequence question

I've been playing The Black Lion against 1. e4.  The standard system move sequence is 1. e4 d6, 2. d4 Nf6, 3. Nc3 Nbd7.  Since controlling the e5 square is a key component of the system for black, why not move to e5 on move 1 rather than delaying till move 4 or beyond.  I've looked through the book on The Black Lion and don't see this discussed, but 1...e5 is never played.

its a kind of fedghog system so e5 is not commited earlier in this system black maintain his third rank.

You'd have to contend with openings involving an early d4 by white for example when I'm guessing you can't keep the lion set up at that point if white captures on e5.

If white left e5 alone until you've achieved your desired setup, then it would just transpose back to the lion.

There may be other reasons, but this comes to mind right away.

1.e4 e5 2.Pf3 d6 3.d4 is technically the Philidor or a line that leads to the Hanham if you insist on a similar position. 

You get Bc4, exchange threats and Ng5 threats. Even Qh5 with mate threat if Ng5 was already hanging. Possibly even Bxf7, maybe the battery Bc4 Qd5 in some lines. So I think you may not be able to transpose back. You are more or less committed to the Hanham.  

The short answer is that no, you can't.

In fact 1...e5 2.Nf3 d6 3.d4 Nf6?! 4.Nc3 Nd7 used to be the standard way to reach that position in the past (Nimzowitsch scored many fine wins with this setup); however it was later discovered that 4.dxe5! Nxe4 5.Qd5 is better for white. Instead 3...exd4 is fully playable, but obviously it does not lead to the lines you want. The point of the modern move order is to avoid this subvariation, so you're well advised to stick to 1...d6. This also allows white some interesting deviations with an early f4, but remains the only reliable way to reach the formation you want.