ShinHakkaider
Hero
After some thought, I'd say yes it would STILL be D&D.The 6 attributes are the most sacred of the D&D legacy elements. But what if we just eliminated them entirely? What if we just used skills, proficiencies, feats, etc to define what a character is good at mechanically?
Could D&D be D&D without ability scores? Would you play D&D without ability scores?
I started playing with the Moldvay box. There was no separation between race and class. THACO was a thing and hadnt been simplified to a d20 target number and there were 5 saves (IIRC).
Mechanically, it's almost a completely different game from when I was 12 and first started playing. I'm in my 50's now and no longer play D&D but still play TTRPG's and D&D still exists and is widely played. Older players may ditch the game with that massive of a change and WOTC would be creating yet another silo of OSR gamers.
But D&D would still be a thing.

