Not only do the lenses make a lot more sense thematically, the argument that seeing his eyes adds value is grossly exaggerated.
Three reasons.
1) It's not the eyes themselves that lend expression...it's the brow and facial muscles surrounding the eyes. In order for those expressions to come through, the eye holes would have to be as big as Captain America's in the MCU. And that's certainly not what most people who support eyes over lenses have in mind. No, the previous live-action Batmen have only showed their
eyeballs. This is a hugely important distinction. Showing the eyeballs can show you what direction the actor is looking in, but that's it. This idea that having the eyeballs exposes allows much greater acting, or some sort of nuance, is quite silly. It's literally just eyeballs.
2) Having lenses that can move, like Spider-Man in the MCU or Deadpool, allows
greater expression and acting than a static cowl with the eyeballs exposed. If Spider-Man can have mechanical eyes, so can Batman. Even the animated series showed far more expression than the live action Batmen have...the expression is always a serious scowl, because that's the only thing a static cowl affords.
3) Like Matt Damon said, playing Batman is not exactly playing King Lear. Pattinson can chew up the scenery all he wants when the cowl is off. When it's on, I think it's about damn time to get the classic look on screen. Not to mention it would be a fresh change that would make this iteration unique from the previous FIVE.