It's difficult to even guess what the deal with that was. If you search, there's multiple articles saying they put 3 years into it. Yeah, no. That's overlap with RE2. I wage they put maybe a year into it when the engine was just reused from RE2. All they did was build some new setpieces, modded zombies to make them look slightly different but not really, add a few new monsters and program it.
RE3 Nemesis was developed under a year and it's a rock solid main line title. It is shorter than RE2 but it was designed to be harder. That's why it's so RNG heavy, and they give you the live selections to add endless replayability.
The remake on the other hand just reeks of it being rushed. The cutscene where Carlos shows up definitely hints that she was going to the RPD, and then it cuts to the subway for some reason. I tend to think there was going to be an uptown map before that, but it was skipped over.
Between uptown being cut, downtown being reworked but very boring, Drain Deimos being reimagined shittier than before and smaller, no Brain Suckers (I know they're very similar to DM, but don't fucking cut it) Nemesis type 2 and 3 FUBAR, no Clock Tower, No Park, No Gravedigger, no Dead Factory, NEST 2 LOL and no Mercs. Why even bother? Why cut content from a game that was already rushed? On top of all that, I hated Jill in it. Her personality was so alien to how she's been the whole series. She was always headstrong, assertive, but kind. This one looks more butch, and she's just a cunt most of the game. She yells SUCK IT to Dogesis and I could just feel the SJW producers patting themselves on the back for that one. I also hated how little Nemesis is in the game. He's really based around boss fights for the most part that lock you in through a cutscene, where as the original you can just run from him. You cannot just down him to rid him of an area and there's really only one stalking segment in the entire game when there's nearly 10 or so in the original. Player choices don't have any affect to outcomes with him, and that's his biggest problem. He's too much built on rails for him to be any fun.
For everything wrong with it. I liked Carlos in it. I thought he was objectively better besides his dumpster juice hair and looks way better with the classic look. I liked that Tyrell was supporting cast that stuck around awhile. The Hospital is way better too, but it's obvious lab entrance elevator is completely retarded. That was something I liked about RE3 original. There's no lab. The Dead Factory was the disposal facility of test subjects in the outskirts of the city. NEST2 doesn't make any sense how there's seemingly an identical RE2 lab style shaft under the hospital that connects to some skyscraper where the helicopter to escape is. The geography of that is still confusing.