It's weird, really, they messed up in terms of speech in opposite ways on two different games.
Fallout 4 needs full dialogue choices, and preferably more choices related to perks/SPECIAL, and voiced lines are nice, but not necessary. This is basically the system in Elder Scrolls Online (and older fallout/tes games).
Elder Scrolls Online however needs voiced characters, is fine with limited info dialogue choices, and has no real need of choices based on perks/stats (the only perk ones are rarely used benefits from fighters/mages guild skills).
It needs the voiced characters especially, then you could have co-op dialogue, where one of the groups choices is rolled for, then spoken for everyone, and everyone is on the same page, which is the way it works in Star Wars The Old Republic.
It's weird that both Bethesda/Zenimax teams went for the wrong choice for their game.