It is entirely possible that we can make a whole town or city for dead Pokemon, but that might be a tad bit elaborate. And actually, we already have a Zombie status =b so yeah........
The idea of an Undead Pokemon is relatively new, and like all other ideas, it will have people that do not like it. But, I agree with Ejames on this one, please keep the flaming and such away from the forum, and try to help us improve the idea through constructive criticism. I mean, come on. Over in the pixel art section, this is exactly how it works. If there is a problem with someones work, then other spriters suggest improvements, and thats it. Thats why you don't see posts saying "oh this is terrible! I hate it and everything about it!" No, you see people saying what they don't like about it, and ways to rebuild it in a better form.
~Des