Hussar
Legend
The shift in bonuses doesn't make that much of difference, earlier editions had lower overall numbers. HD max's were lower 9-11 HD, while now a days 20 is the usual max for HD. 20 dice of falling damage threatened most character with heavy damage or close to deadly damage, while now 20 dice is just hp tax. etc..
You believe an all 14 stat character is a good while I believe its barely fair and will require several ASI to only become a good character.
As I've always said this is my opinion only.
People always talk about the character maximums in AD&D but rarely talk about the other side of the screen. We're talking an edition where the largest monsters in the game have less than 100 HP. Ancient Huge Red dragon taps out at 96 HP in AD&D. And that's about as big as it gets (outside of unique individuals). This is an edition where you could meat Ancient Black Dragons at 5th level and expect to win that fight quite handily.
People tend to forget just how much nastier later edition monsters and challenges have become.