The Venom space alien genre thing got introduced in the cosmic Secret Wars mini. That might be the first time his world intersected with cosmic elements.

So were the concepts of Tarzan, Doc Savage, Phantom, The Shadow, Lone Ranger and others that predated the comic book heroes and did just what you suggest, and they have mostly faded into obscurity and irrelevance only appealing to people who were around in their heyday or shortly afterwards when they were still cultural touchstones.

Compare that with Sherlock Holmes, who is of an age with those others, but who was constantly reinterpreted for new audiences, growing and changing until they had a resurgence after falling into obscurity and once again becoming cultural touchstones with shows like the BBC's Sherlock being a vibrant force in fandom and resonating with audiences despite it evolving the "rock solid" concept on the great detective into something more relevant to current audiences.

Locking a property in place like you suggest, only locks it into a path to eventual obscurity and irrelevance once the original audience it appeals to ages out and dies off because it will not have the same appeal to newer audiences whose tastes have grown and changed with the times and with whom those "rock solid" elements will not resonate.

Rock solid concepts that have continued to resonate (like say Arthur, Hercules, Robin Hood, etc.) have been around centuries, not decades, and continue to get reinterpreted for each new audience. If those "rock solid" concepts want to continue to be relevant and find new audiences, that is the path they will need to take. In their present form, they most certainly are NOT immortal IPs, they are products of the 20th century who will have to transcend their original incarnations to become immortal as the truly mythic properties have done. Myths are not static. Static characters are not immortal, they have an expiration date-the lifespan of the audience who discovered them when their core concept resonated with the audience. Some of those "rock solid" concepts you like do not resonate with current audiences but things like Into the Spider-Verse show that the characters can still resonate with current audiences as long as they are allowed to grow and evolve beyond those static elements. There are certain elements that are the core of the character-with Spider-Man it is the everyman and great responsibility coming with great power, not street level or other aspects you lament it losing. To be an everyman, the Spiderman concept has to continue to appeal to any and every one no matter who they are, and that is the driving force behind things like the Spider-verse. That is the immortal element of Spider-Man, not street level mostly because the street level of the 60s and 70s looks nothing like the street level of the 21st century.

-M

I realize that not everyone agrees with me, but I'm of the mind that the iconic characters (ONLY the iconic character, mind you) should remain relatively locked in place with the illusion of change. Yeah, yeah. Alan Moore (my favorite comics writer) would curse me if he read this, but these are immortal IP's that have been around for 60, 70, 80 years for a reason: the concept is rock solid.

Wow, that last sentence. EXCELLENT IDEA!

How can we make this a reality?

I can imagine so many scenarios if, say, Bruce Banner was ageing in real time, etc. We can't compare chalk and cheese but due to real people ageing, we already see it in soap operas.

I WANT THIS IDEA!

It would work!

Old time audiences have some affection for Gwen Stacy, younger female-er audiences might relate to a younger-female-er Spider-man.

The dimensional stuff is completely irrelevant to Spider-man except for one story, since Spider-Gwen lives in her own dimension.

 It's a little surprising to see such shock at concepts that have been part of superhero comics since well before Spider-Man, and have been around the whole time he has existed?  Are you this annoyed with Mary Marvel?  The Earth-Two Flash?  Power Girl, who is an almost perfect analogue for Spider-Gwen?  The  What If? comics that I posted above?  Spider-Man 2099?  The early '00s Spider-Girl series?  

Spider-man in the sixties was the nexus of the "street level" Marvel universe but he was also the nexus of the "cosmic" Marvel Universe and the "Horror" Marvel universe because he headlined Marvel Team-Up and met everybody.  

ANYWAY the important point is that Venom is way dumber than Spider-Gwen in terms of genre-plasticity and everyone should just admit I'm right and tell me how smart I am.