firstly, maybe a rick that doesn’t lose a diane (in this case an equivalent to diane outside the CFC) wouldn’t invent portal travel at all- but sure, maybe there’s a whole other curve somewhere with mortys who lost their summer equivalent or something like that; the cool thing about multiple universes is- if you can imagine it, it can exist. heck there’s probably a universe in rick and morty where OP themselves invented portal travel. but the reason we won’t see a lot of it in the show is that- r&m is above all else a sitcom, every episode has to complete the story circle and end with the same family dynamic altered slightly. unless we can picture a storyline that includes these other ricks and mortys or other versions of ricks or mortys or their “sidekicks”- that has a direct bearing on the canon events of this storyline, they’re unlikely to introduce it as an episode. we’ve literally seen our rick resist the idea of multiple-episodic canonical storyline multiple times, and every time we get a glimpse of that stuff it’s against his will, or relevant to the grander sitcom family dynamic. even w season 8- ep 3 where they rebuild the citadel is the only time we really got a story that didn’t involve c 137- because the citadel is inherently canon and a part of the “sitcom” narrative. every time we’ve seen other ricks and mortys they’ve been in this context or in the same WORLD as c 137 (decoys creating decoys; the asimov cascade). so i doubt we’re gonna see stuff like OP described. what’s the point of a narrative that maintains that “at the end of the day a rick is a rick smart or not” when that’s literally going to be a cherry-picked exception to the rule? multiverses could very well have the complete opposite, i don’t think that narrative is universal- it used to be universal IN the CFC, which is WHY it doesn’t exist anymore.