The unlikelihood that you would meet yourself on any other parallel Eart
I understand suspension of disbelief and don't have any real issue with the facts that I'm about to discuss, but I think it's worthy of mention. There are a couple of ways to approach a potential series of stories possible from this type of story. One is to go to worlds where another version of you is living a different life. There were three different versions of the Asian girl that went along for the ride to each new world, which is something the writers were developing in some way. They all looked exactly the same, had the same personality (more or less). It was like they were exact carbon copies, born and raised under very similar circumstances.
But if, for a moment, we were to consider the different possibilities that any end result might happen on any world, it is very unlikely that there would be more than one of anyone in more than one world. And even if there were a copy of one's self, it's highly improbable that they would be dating or interested in the very same person from another world, as the nerdy lawyer did in two different worlds (at least).
In the first visited world, there had been a nuclear war. There were characters present from different worlds, most notably the copy who had the same exact name as he did on our Earth (assuming the original Earth in the story *was* our Earth, wouldn't *that* be an interesting twist!). But for there to be exact duplicates on more than one world, this follows that each had the same parents, going back to the beginning of time. But circumstances would likely be different and it wouldn't take anything necessarily drastic (like a nuclear war) to change something as simple as who is born. Say Mom and Dad back five generations never met (because they never crossed paths), that means one child is never born and that child never being born would change the entire lineage so that Officer Stone would never exist.
Now, I know that the Asian girl mentioned there are so many worlds, many of which are weird in how similar they might be to your original one, and how one might be exactly the same except for having one less mosquito. So, very likely in the first visited world, it was exactly like millions of other Earths, except that there had been a nuclear war and Kansas was split geopolitically into East and West or North and South. And so, perhaps my points are invalidated. On the other hand, this type of idea has vast potential and never mind it being optioned into a series. It could (in my opinion), in fact it *should* be the vehicle for an entirely new vehicle for a science fiction plot: the device that does not send you into the past or future (a time machine) but one in which sends you to a parallel universe or Earth.
And just like thousands of writers over the years have offered their own ideas in various stories among the many different sci fi vehicles (invisibility, time travel, etc.), this would be another in which different writers would have different approaches and multiple amazing stories to tell.
In fact, if this series were ever picked up, I'm sure there would be some episodes where some Earths were visited that would be terrifyingly different than our own -- perhaps landing in a place where some Lovecraftian nightmare exists or that big huge cockroaches roam the planet. Or humans speak an entirely different language or they speak our language but with a weird kind of accent.
This was a ninety minute movie and poetic license must always be taken. I'm just saying that if there were so many infinite worlds out there, it would be unlikely that any one of them would have anything close to our own. If our own Earth were to be replayed from various times (from the age of the dinosaurs, from the Second World War, from the time of Caesar), a million times, there would be a million different vastly different end results. Languages would develop differently, for example.
I'm not saying that anything that was done in this movie annoyed me. It, I think, was innovative and original and, hopefully, created a new sort of device that other writers can build upon in their own works -- the parallel universe transport machine.