I have to say, as long as WotC is planning on making Fourth Edition Eberron-compatible, they won't be hardcoding "points of light" into the rules design. (I have no idea how they'd do this in the first place, but that's another matter.)
The only sense in which I can see the setting assumptions being written into the system is with magic items. 3.x assumed that people could sink money into purchasing magic items with relative ease. You didn't have to play that way, but in my experience, going against that pattern caused some odd things to happen. Of the many changes they're making, the changes to magic items strike me as being the point on which they have been the most silent. (Obviously my own curiosity should be factored into that bias.)
Haven