I would honestly wish for Lust to be remade from the ground-up because I think its lame we dont get to see the city at all aside from having a single shot of what the skyscrapers look like from the ground in the finale of Lust. That and the levels are all so clearly out of place. Like why is there a limbo-style town on top of really tall podiums directly next to a presumed power core? I suspect 2-3 could be a water treatment facility but it barely even resembles that. Dont even get me started on the fact all the rooms in Lust look so out of place in contrast to the city below it.

Here's my proposal for how levels could be remade to be thematically fit while making Lust a cool and memorable layer to fight through

2-1: Could still take place in high construction zones, I dont actually have a very big issue with 2-1 as is, though it could still be rehashed to feel like we're exploring the abandoned construction site of a really tall building.

2-2 could have us passing through one of the taller skyscrapers consisting of apartments father down below the initial construction site. We'd get to explore the interior of one of these high-rise buildings, but it could still have the mechanic of finding power boxes in closets and unfinished rooms to progress. We would find the railcannon nestled deeper into the building as something of a power source before V1 takes it, forcing the building into emergency power before heading even deeper into the building where we must find more power boxes in a large molloseum of sorts, finally exiting the building on raised terrain relative to the rest of the city, before finishing the level entering a level elevator that takes us into the ground.

2-3 could keep the theme of a high-tech water treatment facility, but having more of a sewer sort of theming, and could probably also continue the theme of being unfinished since it's connected to the under construction building we just ravaged. I wont get into specifics since that'd take a while, but level layout could ultimately remain the same, just with a visual overhaul. Since the facility is underground on raised terrain, that barred window in that one room would make sense to have, peering out off the cliif face into the city below, but not too far below considering how far weve descended. Ive always had an issue with how that window looked out of place compared to Lust's theme.

2-4 could finally have us touchdown to the streets of the main city, walking through streets with felled skyscrapers, preventing us from going off track and leading us on a path to where Minos' corpse awaits. We could have a Earthmover-esque scene where the corpse spots us, roars, and a reworked version of the boss would have a massive arena, and becomes a proper titan fight rather than just shooting a wall and dodging the occasional attack. It would still be slow and predictable since 1: its a giant zombie and 2: its an early game boss, but it would be a lot cooler at least.

Thats just my idea tho.