The idea behind sticky is to have the thread visible to everyone, having a main sticky could generate an issue where people will just ignore the thread without knowing what is within.

Therefore this idea has some limitations, it is not impossible however, if you find a way to correlate several of the sticky threads onto a single thread that people will be able to tell from the title along, create it, post the link to the thread here send me a message (that way I will know to check this out) and I will sticky that thread and take away the other ones. Its essentially what I did with the important documents sticky, there where 2-3 document threads and I just made one that links those documents and more.