I think your main concern is that adding customization options to the sim at this stage is very early since the developers still are in the process of ironing out bugs within the basic functionality of the sim, and that doing so can only complicate early development plans.
I don’t have the technical knowledge to say this is or is not possible to implement in early builds but if it does complicate early development plans, perhaps they can hold it off for a while until the sim reaches a more mature stage. But I’ll leave it to the discretion of the devs to decide.
But ultimately, having more customization options related to anything graphics and performance is always a plus.