Yes, but I thought you adopted it from Sig?
The owner of the 'pet' is the one who holds the key to its changes.

I didn't think that Chonicles was that great of an idea... I mean... it was an interesting complaint that BFG doesn't cover everywhere. However it does allow for something similar to how privateer press does releases. If you aren't familiar, they do a new book every year with a few new models for each faction.
In BFG this idealogy could be done similarly. Every year you release a 'book' focusing on a different war. Even now it is set up for it, and has done it in the past. One of my hopes is to continue this trend through 'FS'.
Here:
BBB ---> Focuses on Gothic war
Armada ---> 13th black crusade/battle for armageddon
Nemesis*---> Pirate war in tempestus
Tartanus**---> Rogue Trader war near the Ghoul Stars
*unnoficial, and won't be fully part of FS
** Not written yet, and may be called something else. Likely release will be late summer/fall.
These could be continued upon. Lets say there could be a book based around the Battle for Maccrage, with an alternate nid fleet, Bakka, and even a Ultramarine fleet.
One note that I was thinking of, was that Eldar Heroes in FS will make reserve corsair/cwe ships not count as reserves when taken in either fleet. Meaning that they wouldn't get the -1 ld, but that's for another place.