I've gone to toward the right and left on two separate Warriors (to see how it felt). I feel like Dragon Scales is stronger; it's not confirmed, but in recent builds, we think it's been changed from its old RPPM to a %-based chance like Celestalon said it likely would be. It fits in well with how Never Surrender changes the cap (I've stacked IP to a huge amount while off-tanking), and in general, it just feels better.
Rage generation is perfectly fine and, to be honest, has never felt like much of an issue, even before they changed it from the old formula to the new one.
Here's something that has been posted in the discord, courtesy of @
Marok:
That's generally agreed to be the best route. Scales of Earth was changed to proc on every critical block, just a tooltip error, so it's quite good as a second choice.