Though I'm not convinced that this alone is a good enough reason to go back to it, especially if you consider the fact that BioWare will never ever abandon voice acting for its NPC's and voiced protags are kind of a staple of these games now. Thus far their current formula seems to work rather well, so I can't think of any compelling reason why they'd go back to the disjointed silent PC with voiced NPC's. Like, going totally text would be the cheapest option of all, but you can be certain that the vast majority of players would hate it.
They used the voiced NPC and silent PC design for NWN, KotOR, and Jade Empire. It worked well.
I personally use a mod to silence the PC in Fallout 4.
If BioWare would just give us an option for a silent PC, that would be sufficient.