I'd actually be willing to argue about Darkrai...but that'd be entirely off-topic.
Anyway, personally, after inputting my thoughts here, I revise my original thought that it would be intriguing. I'd probably be left with a very sour taste in my mouth if this sort of thing ever came to fruition simply because it wouldn't fit with the nature of Pokemon. As is, I really wasn't a fan of PMD:Explorers because Darkrai was so abjectly evil without rhyme or reason. He was evil for the sake of being evil. It didn't, and still doesn't, fit to me, in Pokemon.