Maybe it's time for a 6th edition then. This post isn't about DnD edition rules, but what makes a great game. There's a reason Baldur's Gate continues to be one of the all-time great games, and if that reason is that the 2nd and 3rd edition rules lent itself to a better pc game, we shouldn't be dismissing it simply because it's 22 years old.
Then that letter should go to WotC, not Larian Studios, who have been contracted by WotC to make a game based on the current existing rules, not the 22-year old rules. This is in part because WotC is a business and they want people to get excited and buy their current products.