Hi Haitem! Thanks for the feedback and the questions. It's great to get in touch with players and hear what they want.
Unfortunately, a Fistful of Darkness without the Horsemen is not planned ... well, not planned by me. If someone's reading this and is willing to give it a try, they have my full support. As you already noticed, the Horsemen are a central theme and a mechanic deeply embedded in to the game. Therefore it's not an easy task to take it out and I think you'll end up with a totally different game. If you want to play a more plain old/wild west game I would recommend Tim Denee's Blood Red Clouds in the Western Sky. It's a game in an early stage but I think it will be developed further and soon, now that he has Blades 68 ready and done. Sorry for the bad news, but I don't want to keep you waiting.