Is your desire driven by a lack of decent internet connection or perhaps second-hand market for the games?
IMO next-gen could have optical drive as an optional accessory which you slide into some slot if you want it in console.
Not all of us like or value digital games.
For most collector-gamers I know, digital games are almost worthless.
Few points:
Digitals cannot be sold. Physicals can be sold. So many buy em on launch and sell for 60-80% of what they paid after few weeks. And I like to buy these almost new games for cheap.
You cant have nice collection of digital games on shelf (some like it, some dont)
Faster installs for many. I have 100/10 cable so installs are reasonably fast, but disc is still faster. I have friends with 10/1 and it takes hours and hours to download big patches and full game would be almost a day in worst case.
In my country there are no data caps, but what i have read is that in US and many places there are crazy low caps, so that is another problem for some.
IMO digital games have maybe ~10-20% value of physical game, so no way I would play 69.95€ for digital launch game, 10-20€ max is my max for any digital. (Because they cant be sold, traded or kept on shelf).
I have 700-900 physical games from 80's to this date so fully digital console would be no-no to me.
Optical add-on, well it could work but common consumer can be stupid/ignorant(wiiu = wii addon is good example) so dunno how well it would work? People would buy disc games and cry that they dont work. And more parts to be broken I guess.