Here is my suggestion for restructuring the sections. I have been of this opinion forever, but I know there are operational details. You know when I wrote my Dragon book it was kind of easy, because there were so few games to follow, even when it was relatively fashionable. I would guess that Roiz has to follow about 20x more games in the Open Sicilian section. For subscribers that get 'broken' sections, perhaps you could allow them to choose a section, and then as a courtesy have a download for whatever games they are 'missing' for a certain period of time. Like Nimzo subscribers would get Benoni games as broken down below.

Anyway...

1.     1.e4 e5
2.     French & Caro (there are not many more French games than Caro)
3.     1.e4 ... 
4.     Open Sicilians (could split into 2...d6 Sicilians, but hard to compress another section)
5.     Anti-Sicilians
6.     1.d4 d5 2.c4
7.     d-Pawn Specials 
8.     King's Indian & Modern Benoni (more work for me! but often there are logical transpositions, especially in 4 Pawns and Samisch with ...c5)
9.     Nimzo, Queen's Indian, Bogo
10.     Grunfeld & Anti Grunfeld (many of these are E60, so they are easily missed. Grunfeld has a lot less games than KID overall, but it is so theoretical)
11.     Daring Defences (all from ECO 'A': Dutch, Benko, Czech Benoni, Modern, Old Indian, etc)
12.     Flank Openings