Don't get too happy, like Zaggy said, it doesn't exist, and Glest updates come only every now and then, due to the low number of programmers.
For now, just make different factions. For example:
Tech-Normal ----- rename the tech.xml to tech-normal.xml
Tech-Worker ----- rename the tech.xml to tech-worker.xml and edit it for 7 workers and no other units.
Tech-Offensive ----- rename the.xml to tech-offensive.xml and edit it for 1 worker and lots of attacking units.
Want me to make those xmls or can you handle them? ?