I agree and also disagree. Literally rotating the camera Up, is a bad idea. for two reason:

- it will cause desorientation and will add a new layer of complexity (they would need to also add a shortcut to reset the rotation, it'll be a mess to keep track of i feel)
-looking up mean no cheating tricks for the dev to save time (because letting the player view a world in all angle mean that everything would need to be modeled, it will be complicated)

looking up as "elevate my camera" now this, i agree and should've even been day one. i can't even count the number of time the camera messed with me smile