Anyway, I'm too proud of this post to let it fade into obscurity, so I'm copying it here.
About dang time we had a master topic for this.
In any case, I suppose I might as well share mine. As most people know, I don't really want the two canons to be connected. I feel it would subvert the ending of the classic story and erase the independence of the modern story to try and haphazardly patch the two together. But I do have ideas of how I'd want the two to be connected if that were to occur.
Firstly—and this is crucial—the two should be alternate universes at best. Okoto should not exist in the G1 universe, be it in the past, present, or future. Keeping the two stories independent of one another is paramount. And that's not to say that the universes should be "divergent timelines" or anything like that, either, since that would only make every difference between the two stories subject to endless scrutiny. If the writers are dead-set on the two universes having somehow diverged, then their differences shouldn't be linked to any one causal event, and the two universes should be considered to be just two of an almost infinite number of Bionicle universes, each with its own heroes and legends.
Secondly—any crossover events, should they occur, should be rare and isolated. The absolute LAST thing I would want is for the universes to be crossable at any point by any idiot with an Olmak. That kind of randomness was my least favorite thing about the alternate universe shenanigans of the classic story. I don't want the new Toa crossing over to the old story just to wrap up loose ends in that canon, nor do I want the new Toa's overall quest to be abetted by interlopers from another world. Any crossover that occurs would be better off creating a new, independent problem to be solved and leaving the status quo of both universes intact, with neither group taking away anything more than memories and a valuable lesson of some sort.
I don't think these conditions are too much to ask. They're pretty typical of a lot of crossovers between multiple franchises. To be honest, I'm not entirely opposed to a crossover story—in fact, if we got to a point where there were more Bionicle novels or graphic novels than it took to take that year's story, and they chose to create a one-off crossover in one of them, that'd honestly be pretty rad. But most people, when they propose connections, seem to want to tie the two canons together inextricably, where the events in one story directly affect the other in one way or another. And I just can't get behind that—the two stories are too different to reconcile without making a dent in one or the other. I'd rather the old story remain a closed book, with all its successes and failures preserved, and for the new story to be allowed to continue independently of that.