Entralink outside of the games, what would you think of?

alright, so for the past two months, I've been thinking up all sorts of ideas I could try for my Pokemon story while writing it, and this latest idea got me wondering. The Entralink in the games allowed Pokemon players to cross over to another player's universe. what if that very similar concept applied to other continuities of the series? granted, until it occurs elsewhere, it's traditionally limited to the Unova region, but the kind of ideas that this threw a big, fat, "EUREKA" sort of moment to me.

I suppose I'll start with my idea.

my idea was based around the Global Link being the primary setting, where the Dream World was a recent project accomplished by Fennel (in every continuity she's in), and she invites various trainers to let their Pokemon wander around and overall test it out. the characters the story primarily involves are my fanfiction's main character (tucking in his newest team member Zoroark), Ash Ketchum of the anime (tucking in Pikachu, of course), and Black of Pokemon Adventures (Pokemon choice undecided). little do they realize, however, that one of my story's antagonists somehow infiltrates into the Dream World, and essentially begins causing trouble by corrupting Pokemon into Shadow Pokemon (method explained in my story), and eventually, the Dream World begins turning into a completely vast nightmare. left unchecked, this nightmare would cause numerous problems that many different Pokemon Worlds will not be prepared for. after quickly modifying the three character's C-Gears (and giving it to Ash and Black),the three Trainers cross over to the Anime world's Entralink and, through the Entree Forest, into the Nightmarish Dream World to stop the problem.

the big catch of this is how the battles work out with Ash as opposed to Black and my main character, as the former never really had to be actively moving, as opposed to the latter two, who ran to avoid getting hit in the crossfire.

So now I'll ask for the sake of it, If the Entralink existed outside of the games, allowing for possible Cross-canon (or fanon) crossover stories, what would you think of?