LOST IN THE SAUCE
The Sauce Apostle
I would be okay with that. Although monologuing to himself in an empty room would make for a weird scene. Knowing Marvel though they'll have Doom running around without a helmet in the middle of battles, which would be the one situation where you should be completely armored up. Having to hear that Gorr was ruined because they 'weren't going to pay for Bale without showing his face' really made me worried for Doom. Some roles are bigger than the actor who plays them.I could see his mask less scenes taking place when he's alone in his castle, thinking about what happened to him or prior to getting his armour on.
Dooms best depictions in the comics never show you what his disfigurement even looks like. Like he's too vain to even let himself see his own face.