This will be the biggest page of the setting side of this page, as it discusses, among other things, all of the places in Eberron at at least a high level. Naturally, this is an element that I've remixed considerably. In fact, this section will be so big that I do not intend to make a single page for it, but rather a subpage for each region detailed in the chapter.
However, before that, there are a few points worth mentioning that also belong to the chapter. First off, I'm remixing time. I understand why they renamed the days of the week and months of the year to something that sounds more foreign and fantasy sounding, but in actuality, that's just a cumbrance to players and in my experience, whatever verisimilitude you gain is more than offset by the inconvenience and confusion that it engenders. In Eberron Remixed, we'll use familiar days of the week and months of the year; i.e., rather than saying Sul, the 20th of Olarune, we'll simply say Sunday, the 20th of February.
I also think, given that they go out of their way to describe Eberron as very Medieval in its economics and settlement patterns, that the ratios of economic class are a bit off. 60% poor farmers/laborers, 30% middle class tradesmen and whatnot and 10% wealthy should be rejiggered to something like 85% farmers/laborers, 13% middle class and 2% wealthy. Even that's probably too many wealthy people, but that's OK because the wealthy are much more likely to be drivers of adventure. The focus on education in Eberron is also less believable; I would think it would be more like late Colonial and post-Colonial America where little one-roomed school-houses served rural communities and most people only had a couple of years of any kind of education. The wealthy have access to the universities and private tutors. Most people can read and do simple arithmetic, but that's about the extent of their education, and the possibilities of self-educating by reading are limited, as books would be much more rare than they are in the modern world, and there would be nothing like public libraries. However, given the history and past of a united kingdom merely a century ago, I do think that the notion that Common is the language that everyone speaks across Khorvaire is workable. Some more isolated localities do maintain a native language of their own, but even then, most people speak Common on demand.
At the end of the chapter is a discussion on the history of the region. I don't think most of this is really all that relevant to most of what is happening today, so I'll leave it alone as well, mostly.
Anyway, the regions in this chapter are as follows, and each will link to a unique subpage that will discuss the region in more detail and what will change as part of the remixing process.