Sven Jergensen may be interested. He is getting the next title shot at Syn's 170 lbs this month most likely and if this tourney is scheduled for September he could make it there and get a shot at being a dual division champ!
I would prefer if entry is limited only to top LWs though, especially if it is just 16 fighters. I don't think LWs outside the top 20-25 are deserving of a shot at such a prestigious title. That would pretty much mean top 200-250 p4p and under.
With all the FWs coming up and WWs dropping down you could probably even limit it to top 100 p4p even. Winner of this tourney should be a top p4p fighter when it's all said and done as long as he is fighting top comp.