So why not make ijkl the new standard? It has all the benefits of the "traditional" arrow key layout without losing the speed of staying on the home row.
The only people that would benefit are people who have not yet learned hjkl, and those people have no influence. What are you expecting to be done, Vim wildly breaks standards, pisses off existing users, and changes the default key layout? Never going to happen, never should happen. First off, because it will piss off existing users for no reason whatsoever, and secondly because nobody in a position to make that call would make that call. Thankfully.
Distribute Vim yourself with these changes; see how far you get.