Hi, as a native Spanish speaker myself I understand that writing English is not the simplest thing. I have tried to improve the description of the group, but there are a couple of sentences where not even my Spanish is helpful to fully understand what you mean:
"Through outreach, and research that forms part of the development of potential workshops and talks. And while generate feedback on the current paradigms of construction laboratory way."
I you post it in Spanish I volunteer translating.
... Which reminds me that something you could add explicitly is that you will contribute to the promotion of MediaWiki in Spanish, which implies (I guess) some translation work and collaboration with other Spanish speaking groups.
You said that there were other people interested out of the Mexico City. In your proposal I would add that the creation of this group will also serve as a reference to other initiatives that might be started at (name here other cities with a chance to be the next).
Venga, ¡un saludo! :)