A singleton Words of W____ would keep from decking, provide an alternative combo kill.  As has been stated before, Words of war with bazaar of bagdad can be extremely powerful.  Words of wilding can clog up Fish without much trouble. Words of wind is pretty much useless in vintage unless you are using it in you're own combo.  (Such as to bounce exploration and replay it to get another land play that turn.)  Words of worship will allow you additional land drops, if you are runnign low on life, but somehow I don't think you need to regularly expand your abundant resource in vintage.

+1 enlightened tutor
and instead of tendrils how about
+1 words of war or +1 test of endurance
I also count 14 non-will blue cards, have you considered daze?

I would love to see the statistics of brainstorms played in top8 decks.  It's not so much that I would like to see it restricted, but rather as a benchmark. Brainstorm is generally accepted as norm in vintage right now and would probably not be seriously looked at for restriction without huge and unforseeable changes to the format.  But, my guess is that its popularity exceeds that of workshop and mana drain by atleast 20%. 

Whether it be Gifts ungiven, mishra's workshop, oath of druids, or meddling mage the best unrestricted cards are going to be defining to the metagame.  The only truely back breaking restricted card is yawgmoth's Will.  However, I would not want wizards to set precedent with the benning of Yawg Will.  So, all in all I am accepting of no new restrictions or bans. 

I personally see Lbrary of Alexandria as being able to be unrestricted.
Edit: Just in time for a different thread to pop up about it.  Oops.