The update got rid of having to teach your Pokemon HM moves so it's a 10/10 remake for me.
EDIT: Adding on to this. Diamond and Pearl were the last mainline Pokemon games I finished until Sun and Moon. I fell off of B&W because it both felt stale and it was kind of a slap in the face for them to have a group of people in game bring up that were basically having animals engage in combat sports only to immediately show the group to be just like Team Rocket and toss the issue into the trash.
I know people talk a lot about N and stuff but I never got far enough in the game for that plotline to develop so it's moot for me.
Sun and Moon felt refreshing though, taking time away from the series and them doing enough different to make things feel different enough helped.
I feel like Sword & Shield were a step back in a lot of ways. Even for a Pokemon game the story feels stripped down and after having the trial system for Sun & Moon I was really hoping they'd continue with different gym systems for other places in the world.
But I feel like complaining about a remake being like how the original game was is inserting a valid question to a problem where it doesn't belong though. A remake should try to hold to the original.
My two cents, for what it's worth.