Maybe I am wrong, but I don't think this campaign to gain players is going to be as effective as desired.
Personally, I think there should be more attainable and desirable goals. For 5 joined players who reach level 10 = 1000 IP or something. That should be offered for every 5 joined. With this idea, at least people would view the challenge as 1. possible, 2. worth the effort, and 3. desirable in some way, because if you don't like the other option, you still get the IP.
Since most of the goals are either 1. virtually impossible unless you are some crazy marketing genius with insane contacts, or 2. not desirable rewards, I wont be inclined to even try and imagine that there will be others of the same ilk.
Also, $1000 limit for "all expenses paid trip" for recruiting 10,000 players?! Are you friggen kidding me!?!? That's the lamest thing I have ever heard of. If someone legitimately gets 10,000 people to join and get to level 10, they should get an all expenses paid (no limit) trip for a week and an intern job in the Riot marketing department. That is A LOT of marketing/advertisement worth WAY WAY more than $1000.
Disappointing and shameful.