Have you ever even visited it? When I was really into writing wiki pages I would go to sleep planning to write a few pages, and come back to see they were created, along with 50 other pages. The team is hard at work a lot of the time, and there is tons of information on it. It just happens to be up to date, and it seems you are looking for info on older modpacks. Them writing support for every single version of a mod is completely implausible.
YouTube is actually a good source, as you see it working, and have 100% proof that it works.
Secondly, you just create an account (preferably under the name DREVL), find pages that are missing, and write them correctly following the guidelines that should be available in the link portal thingy.[DOUBLEPOST=1378855326][/DOUBLEPOST]
Many mod wikis are not very info heavy.
Also, best modpack to replace MindCrack would be DW20 + GT.