Retro Level: Thoughts? Ideas? Visions?

Retro Level

"One section of the castle will feature an area that Miriam can traverse in beautiful retro graphics. We've been referring to this section as the “8-bit Level” internally, although it may be closer to 16+ bit depending on how we mix it with the full game. While a full-blown 8-bit game doesn't fit into the game's budget, backer support will allow us to have fun with the development and create a little retro magic in our game." - Update 2 - May 14 2015 - Source

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Classic Mode will give us stages, linear adventure and a 'Castlevania'-feel from the old days before the RPG-elements were introduced.

Inti-Creates development for the prequel will be a complete 'Classic / Modern' game with probably a combination of the best aspects from both Castlevania, Metroid and Igavania, with an Inti-Creates twist.

Meanwhile the actual main game will have a Retro Level inside of it. Perhaps a hidden room, or special odd room or an corridor of some sorts. This thread is about the Retro Level, not to be confused with either Classic Mode or Bloodstained - Ritual of the Night prequel.

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What do you expect to see in this environment / area of which will be a "Retro Level"?

Whole Section?
Do you think it will be a complete section of the map, for example, instead of going to the "Garden of the Unbound", you end up in "The Lost Arena" which have many different locations attached to it? Everything from a bigger  area to a corridor some rooms before you exit the place and goes back to "normal" again?

Small Room?
Do you think it is perhaps just one room, where there is no need for a door of any kind, the transcition from one fram to another would be fine since there are less for the game engine to process once you get close to that room. If so, what will the room contain? Would it have a tribute of some kind? Will it have a pixelated version of something you have seen before in the game? Perhaps it is a room with nothing but just cool backgrounds, like paintings and information?

Big Room?
Or, do you think the retro level will be one big room (2x3 or 2x2) with lots of floors and details, showing all kinds of things, even have unique (or remade) enemies?

Assets
Do you think Inti-Creates will borrow their assets for making this level in Bloodstained - RotN connected to the prequel, or would you rather see IGA take charge in that area, making a, what we would believe, his vision of Miriam and the environment if he could have gathered enough pixel-artists to actually make the whole game in that fashion?

Rules
Think about it, there are some creative freedoms in this, the rules are almost out of the window. The movement, the backdrop philosophy (having it darker than the forground) and behaviours are all within those rules. Example. Will same breakable things be breakable? Are the speed the same? Same sounds or not? Are there something different in this area, or would it be like the rest of the game except for the graphics? And speaking of rules..

Shards
Lastly, how will the shards work in this level? Will they look 2,5 D? Will Miriam be LOCKED so she can't use any shards in this are, leaving us to believe it will be a cursed environment of some kind? Perhaps there will be a pixel-filter on-top of any of the shards we are using?

Let me know!
Mostly what you think, and add in what you really want to see as well.

Thanks to Pure Miriam for the inspiration of this thread.