I have a feeling I know the reason behind these complaints. Seeing your character move very slightly with realistic weight gives you the feeling of not just controlling something alive, but of being that character.

Therefore, I propose that the loss of the realistic movements, if it happens, would be a big one, but would be less of an issue than the loss of our current "target enemy and your head turns to look at them with the eyes following them independent of the head" mechanic.

Just that one thing is what I've finally nailed down as being the biggest thing that differentiates this game from GW2 (along with how the camera is placed). It makes you feel like you're truly there, and adds a level of empathy to the character that very few other games have managed to do.

Anyway, just my opinion. Continue on.