There was some discussion on the Steam forums as to how to get an update to GalCiv 2 out there.
Draginol popped in and suggested that an update incorporating the expertise of the fanbase would be the best way forward. A bugfixing update would soon be on the way.
I sent a message to the other tech tree modders, and luckily secured the assistance of Gaunathor, and later MabusAltarn, as well as some dedicated members of the community who posted some valuable feedback. They have been instrumental to the success of the community update, and I'm glad to have played a small part along the way.
The community update has been released as part of a rollout of Stardock products on GOG.com and is also available as an opt-in beta on Steam!
Downloads and links
Issues which can't be fixed with XML manipulation.
The file archive folder, hosted by MabusAltarn.
The list of bugs which can't be fixed with XML manipulation.
The spreadsheet of data changes, hosted by MabusAltarn.
Initial discussion on Steam forums
Credits for community member and Stardock staff involvement
Gaunathor - Tech tree changes, descriptions and standardisation. AI value adjustment. Planetary improvement changes and fixes. Keeper of the change logs, spreadsheet and file archive.
MarvinKosh - Typo and description changes (English.str, Techtree.xml). Additional spreadsheet analysis.
DARCA1213 - Tech descriptions.
MabusAltarn - UI changes, tech tree changes, AI value adjustment, keeper of the file archive, spreadsheet and change logs.
Maiden666 - Suggestions for improvement (technology victory bonuses).
OShee - tech descriptions.
SiliasOfBorg - tech descriptions.
Frogboy - executable code changes.