Theory for a potential season 2:
-We don't see Adam Smasher kill David (so he's alive)
-he is being kept alive by Arasaka as an obedient dog
(someone that compatible with Cyberware is too valuable to die)
-Rumors of David being seen start circulating the city
-Lucy returns to Night City to Track Down David
-Lucy Confronts David, who's a mindless puppet
-David returns to Arasaka as he's programmed to do
-Lucy makes a plan to save David from Arasaka
-Davids Mind comes back briefly at the end
-Lucy and David have a warm moment together
-David begs for Lucy to end his suffering (he doesnt want to be that obedient mindless monster)
-Lucy kills David to free him from the prison inside his own body that Arasaka put him in
or something like that
'Cyberpunk Edgerunners' producer says fans will cry more in season 2.