The only reason that the RE1 remake was so close to its source material is because the director and series creator directed both games.
As for RE2, the director & producer has left Capcom, while the writer has passed away.
That should be enough indication that the remake of RE2 won't be as "faithful" as RE1 & its remake.
While Yoshiaki Hirabayashi may have been involved in REmake HD, remember that he's also the scenario writer for RE5 and the producer of RE6.
Whether it's 'old' or 'new' style is kinda 50-50.
Furthermore, despite the whole thing being Hirabayashi's fanboy dream, he's only the producer.
The ones that decide the gameplay and scenarios will be the director and writer.
So if the likes of Yasuhiro Anpo (director of RE5 & Revelations 2) or Eiichiro Sasaki (director of Outbreak series & RE6) got a role as the remake's director, say hello to OTS RE2.