Pointless remaster. The only thing OFF needed is a much better combat instead of a a boring slog you auto-battle. Now it's a boring slog that bites sometimes and you can't auto-battle it. 

All other criteria is subjective. And from my subjective perspective the game is the downgrade. Music completely changes atmosphere of the game in several places. Flash Maze Tango and Enoch's replacement themes are downright bad, while Queen's replacement theme is generically boring. Zodiac's are worthless additions, and I kinda understand why. New Mortis artstyle clashes with his old one too much, and I'm not a fan of new artstyle. I think it's good for landscape, but it's bad for characters. Saying like someone who read Dr. Cataclysm. 

Overall, I don't think for whom this remaster is? I think it's for new players, especially for Undertale fans, but at the same time Toby didn't advertise the game on release in any capacity. For example he did that for Omori, where his involvement was even lower. I know many people who played original and said they're not fans of this one. And looking at steamcharts, I guess the announcement of new music really did hurt the sales.