Well there's already been a LOT of discussion about Wall Market in particular. But here's my capsule run-down on everything in this chapter and how I want the remake to handle it.
Opening Bombing Mission
For one thing- They'd BETTER keep that iconic music cue. The idea of making the reactor a bit more labyrinthine would be cool especially if they go with an action RPG style. Also, imagine the Scorpion boss with a tail laser that is more directly responsive to counter attacks. I can imagine if they go full action, you would have to coordinate going around to the back of the boss to avoid it's tail laser or tanking in the front.
Sector 7 Slums
Drab, drab, drab, drab, drab. I want to see this place looking miserable, not like a little kid's cardboard fort. I want dark streets, seedy underworld, acid rain, steam. I want the seventh heaven to look like a rough, uninviting place even with Tifa's feminine touch. Most importantly, I want them to find some what to include the line: "What the hell?! Finger?"
Mako Reactor 5, Sector 4 Plate
The thought of navigating a fully functional train tunnel and perhaps even a mild degree of platforming through these segments has me very excited. The Sector 4 Plate is one of my favorite segments of the early game just because the idea is awesome and adds a lot of depth to the city.
Sector 5 Slums
"This guy are sick."
But also same as I said about the Sector 7 slums. Drab. Silly side note- the polluted waterfall behind Aeris's house will probably look amazing with HD graphics.
Wall Market
Same as what's already been said: We want our girly Cloud. I wonder how the honeybee inn scene will be handled in HD in particular. Perhaps it'll be taken to a whole new level of pervy goodness or it will be dumbed down significantly to avoid tripping any censors. Sadly, I imagine the former. On that note, Don Corneo's kinky dungeon is probably gonna be a lot less Spanish Inquisition and a lot more 50 Shades of Grey.
Reminds me of one of my fave lines from The Jenova Project where Aeris, upon seeing the devices of sexual torture simply remarks:
"Kinky."
Train Graveyard, Pillar Fight Scene, Golden Shiny Wire Of Hope
The Train Graveyard is another fun place, and I'd like to see the train based puzzles amp up. As for the Pillar Fight Scene, I want it intense and blood-pumping. But most important the Golden Shiny Wire of Hope. While feelings are mixed I hope this doesn't just turn into a cutscene. I want to climb up Midgar the old fashioned way, with the wreckage puzzles kept intact.
Shinra Infiltration
Maybe this is just wishful thinking, but I hope they go full Solid Snake on this segment. I want sneaking around corners, I want dodging enemy patrols, I want utilizing stealth tactics. Makes something awesome out of that big building. They already have Cloud crawling through vents, so it's a start. And for the scene at the end where Jenova breaks out... make that scene full on survival horror. Creepy music, scary lighting, even jump scares. Bring it on.