But... it's D&D. Dice rolls is half the point.
I mean, there's countless games out there where dice rolls are hidden... but people who play D&D like their dice.
The whole dice thing is fundamental to DND. It's a huge component of the whole tabletop social experience. People have their dice. People share their dice. People watch their dice. People make their dice. People talk about luck in rolling dice. It's hard to imagine playing tabletop with a random number generator.