It might seem stupid to not add JP content, but you got to remember that Universal is the one that has veto power over anything that Frontier wants to do. To a big corporation like Universal, Jurassic
World is the past, present, and future of the franchise; and Jurassic "Park" is something they really hope you'd give up on. That's unfortunately the logic of many of these soft reboots nowadays, just from a corporate standpoint. The idea that the old somehow 'competes' with the new, or that the new somehow cannot fairly compete with the old so the old has to be forcibly evicted from reality. That sounds like I'm making Universal seem mean and evil, but really it's just a simple product of people in large groups being very very dumb. The intelligence of individuals is diluted in groups, and with regards to Universal's motives, they just want to have something safe and comfortably profitable - which given how JP3 was tepidly received by fans and critics, makes the 'JP' brand neither of those things and starting over completely with 'JW' the best course of action. It's 'dumb', but not irrational.
And in a sense, you do want the new to establish its own identity.
If you watch the production footage of the JW movie, you'll find a lot of great details that help establish JW as its own thing - distinct from the safari-esque themes of Hammond's Jurassic Park - which simply were not carried over in JW:E's building designs. Like for example all of the Park Staff (what Disney might call 'Castmembers') had listed on their badges their favorite dinosaur - wouldn't that be a great thing to have in JW:E in a guest and staff info page? Or all those dino themed merchandise, wouldn't that look great on display out in front of the gift shop building? for Granted, there are reasons why certain little details couldn't be included (and some were, like one of the tranq gun designs seen in that video is used by the ACU chopper, so there wasn't a lack of effort), but the sheer generic-ness of the current building models leaves the impression of an utterly soulless and furtive corporation - which might be what Ingen partially is in reality, but not what it would ever allow the public to see. Hammond's JP designs evoked a sense of wonder and discovery, JW's movie designs evoked a sense of normalcy and control (I for one LIKED the product placement!), but JW:E simply falls flat in establishing any sort of theme at all and that's something that going back to traditional JP or JPOG designs can't fix. And the saddest thing is that there's probably no fix coming for this; not because of hardware limitations but because there are far bigger fish to fry in the 'how to make JW:E better' department.
It is what it is, I suppose, but JW:E still has opportunities to use future DLC as springboards to move forward and establish a new identity for the game. I'm all for JP1, TLW, JP3, etc skins for dinosaurs, vehicles, and buildings - and am 100% for bringing back JP-style automated jeep safari tours, 'less automated next time' be damned - but I don't know how comfortable I am asking for the reintroduction of JP's thematic designs when Frontier - for whatever reason - could not successfully establish the thematic designs of JW itself. It's really frustrating to me, because the game does look nice so long as you don't really look too closely at certain things. If that carries over to nostalgia bait DLC, then what's the point?