There are many famous annual coding contest like Google code jam, Facebook hacker cup....... I have a idea that leetcode platform can also hold leetcode annual contest like "Leetjam", to attract famous ACMer's like tourist to participate.

The procedure of leetcode annual contest can be like this:

Qualification: Every leetcode user who solve at least one problem in the previous leetcode weekly or biweekly contest can be qualified to this annual contest.

Round 1:
Each Round 1 difficulty can be same as leetcode contest difficulty, 1 easy, 2 mediums and 1 hard. It contains two sub contest, Round 1A and Round 1B, with different time zone (like weekly contest time and biweek contest time).
Every contestant who ranked top 2500 in one of the contest can be proceeded to Round 2. If you rank top 2500 in Round 1A, you cannot participate Round 1B.
Everyone who proceed to round 2 can win 100 leetcode coins.

Round 2:
Round 2 is harder and longer than usual leetcode contest. For example, 5 problems, 1 easy, 2 medium and 2 hard, with time limit 2 hours 30 minutes.
5000 contestants are qualified to round 2, and top 1000 can proceed to round 3.
Everyone who proceed to round 3 can win 500 leetcode coins.

Round 3:
Round 3 is much harder than usual contest, for example, 5 problems with 1 medium and 4 hard. Problems don't need to be real interview problems since interview problems cannot distinguish these top contestants.
TOP 200 can win leetcode T-shirt and win 1000 leetcode points.
TOP 25 can proceed to final round and win 5000 leetcode points.

Final round
Final round last 4 hours, and problems are much harder than leetcode hard problems. The champion, second and third can win real cash prizes.

Leetcode can also work with tech-companies and get sponsered by them. Top contestants can get interview oppotunities from these tech companies.

That' all of my idea. I don't know if it works.