TG13, all of your desired changes on the XD seem to be answered in the XDM! It doesn't come in the .45 caliber,,, yet.
I was wanting the same things on my two XDs. I have installed the Powder River trigger mod on one and the other is the Pro Custom from SA. They are both satisfying their rolls in my life. My Glock 17 is collecting dust, waiting on a buyer.