I don't understand this place.
If you want Amiga on x86, we already have that. It's called AROS.
You want custom hardware - suprise! All PC hardware is custom hardware. What makes it work the same is drivers that allow the operating system (Windows [insert your favorite version here]) talk to it in a uniform manner. That operating system can now be replaced with OSX, Linux, AROS and a dozen others, all that needs to change is the driver that the OS likes.
Oh, you don't like x86? If you are not a programmer, go stick a finger in your bottom because wtf should that matter to you?
Otherwise, here is your new and relatively modern hardware running an official Amiga OS - take it or leave it.
As an alternative, NATAMI is your future. That's going to have 1/8 the power for 1/2 the price of an X1000.

Yes, NATAMI can surf the web now.
http://www.natami.net/knowledge.php?b=1¬e=11215&x=28