Really? The only changes I've seen is that the covenants are more easily managed and that it runs on PS4.
The worst changes IMO in descending order of importance:
- lighting! It's all kinds of fucked up. Every single scene looks different due to lighting alone, and worse in every single case. Most notable are transitions between areas though, like entering Blighttown from Valley of Drakes, or Lost Izalith from Blighttown, or Duke's Archives from Anor Londo, or Darkroot Garden from Undead Parish just after Andre. It's all so jarring, so unbelievably bad, and I could continue going here.
- again lighting, but a different point since it's interacting with textures, maybe shaders. Armors and weapons which looked like fucking metal in Prepare to Die Edition now look like plastic, without exception.
- no more Depth of Field. While this is a sign of console decline in most titles especially around the year 2010 +/- a couple years, Dark Souls was designed with DoF in mind, which everyone can easily check: the cemetary right beyond Firelink, the view from Firelink towards Undead Burg, the view from outside Havel's Tower towards the Hydra, every view in Blighttown, down the elevator, up the elevator, and every other direction, all views right before and in the Gaping Dragon boss fight, as well as the Seath boss fight. The view from Darkroot Garden bonfire towards the Moonlight butterfly.. and in all other directions... I'll stop here, but you'll believe me if I tell you that this
destroys the dream-like atmosphere that helped make Dark Souls feel so special.
- several sorceries, miracles and pyromancies, all of which looked better in the original/Prepare to Die Edition.
- the bonfire shader & transition screen which have both been taken from Dark Souls 3 and derive the Remaster of the last bit of atmosphere it still had... but oh, wait...
- the torches, which went from atmosphere-galore in PtDE to in your face over-saturated shit in remaster. Especially jarring in New Londo Ruins, but bad throughout the entire game.
- and then there's the last point on my list, which might be way higher on other people's lists, which is matchmaking, the details of which I don't feel like explaining here, because it's kinda intricate. Suffice to say that not only can you no longer gank noobs as a SL1 pro anymore, but it's also way harder to meet with your bros for coop now.
I'm sure I missed a couple of things, but I'm also sure I've made my point clear: Dark Souls: Remaster is NOT Dark Souls and is to be avoided at all costs.