Then you don't know what Mass Effect is. It's as simple as that. I mean no disrespect, but even BioWare has articulated that Mass Effect is very much a human story and trying to fit into this larger galaxy. Without the human perspective, it's no longer Mass Effect. It's just generic science fiction with a slightly different spin on things than other franchises of the same medium. What makes Mass Effect unique is this human perspective largely from the role of an underdog.
What you need to understand is that everything you know about Mass Effect is through this human lens. It's how we understand all these events, the history, and much more. We get glimpses of other perspectives in the game, but the predominant understanding of Mass Effect is always through the human eye. The issue is that it's so subtle and has always been the perspective we've seen, I believe some don't even realize it while playing the games.
This has nothing to do with roleplaying. This is a matter of the universe making sense and being legitimate. Mass Effect was built on the foundation of the human lens. Everything we did in the trilogy was from the perspective of humans and no one else. Every other species was merely an outsider we could learn about, mainly through codex. But, we could never truly understand these other species nor should we try to. That's not the point of Mass Effect. The point of Mass Effect is to explore new worlds, discover alien civilizations, and how humanity grapples with these scenarios. That's what the games were built on.
Mass Effect was never built to be a franchise in which we analyze from various perspectives that are not human. That misses the entire premise of what Mass Effect is. It's much more about human interaction with these others species and how that impacts humanity, the galaxy at large, and how we react to it as a result. These other species certainly enhance and bring more variety to the galaxy, but they were never meant to be the focus. It's why, however, they are a perfect fit as companions because we can get a glimpse into their lives through the human lens, which was the case with Shepard helping his various alien companions.
We always saw everything through the human perspective. Unless BioWare wants to fundamentally change what Mass Effect was built on, there is absolutely no valid reason to disengage from the human perspective. To do so would be to alter the premise of Mass Effect so intrinsically that BioWare could unintentionally ruin it.