Yep ... same thing that’s going to happen with the new Mass Effect Trilogy rerelease and even the Demon’s Souls remake ... they look newer and shinier, but the actual character redesigns are subpar. All of these games had a really distinct style and look that just isn’t captured in recent remakes ... which makes them subpar and not worth it in many cases.
Mass Effect doesn't seem to be in this trap. The only changed model was default Femshep, since they added the finalized version from ME3 to 1 and 2. Everything else looked the same with updated textures and very minor tweaks, like Miranda having her more detailed ME3 hair in ME2.
Finally some more info on the Nier update, and they definitely updated those models. Kaine's face is slightly different looking but I think it's mostly down to a large bump in details. Though seeing a small amount of people who really don't like her outfit.