I just thought that Virgil in particular, and the means by which Grey is able to actually meet the other characters felt like it could have done with more explanation previously, while still keeping it as a point of intrigue of course. I think the new opener does that, by giving a little more information to go off of and solidifying what I personally feel like Virgil's role in the story is, where previously I had no clue if he was meant to be an actual antagonistic force, or just using a very powerful motivator on Grey (fear). In the other routes, there isn't as much going on with the surreal elements, aside from Mark's, so having more of those scenes in Hiro's route also made it seem like it was a bigger part of the story overall, as opposed to just like, the plot device by which things are happening. Like the ending scene of this build was cool, albeit confusing.
I think the reason we see more of that in Mark's route is because it was the one that got the most updates so far. Personally, i really like the intrigue as to what even are Virgil's intentions with this, but i don't expect to learn anything until much further in development still. At this stage though, i do think the story is intentionally vague so as to leave us guessing and trying to figure things out on our own. Which, understandably, can feel a bit uncomfortable since we have to wait for new updates to get more pieces of the puzzle.