Tabletop RPGs of the late 1970s did not share the technological limitations of computer games.Do remember, we are talking about a game whose original design is contemporaneous with the home version of Pong.
How many people today would you expect to play much of a video game based on the same engine as Pong? How much wold they pay for that these days?
Pen, paper, dice, and imagination are all quite identical to what they were in the 1970s.
I would say that changing the appeal (dragonborn) is the kind of thing that needs to happen.
And, also, as much as I admire old school D&D, that admiration is based on leading the way. More current games have certainly had the benefit of seeing the good and the bad in the early games.
But comparing it to changes in computer processing is pretty meaningless.