I have designed a system of rings to make you better in-game by winning these events. Also, these events need to be able to be held every week.

I have personally managed some time of system to help initial these items from being "overpowered"

First Ring - 10 ap, 10 hp
Second Rings - 12 ap, 12 hp
Third Ring - 14 ap, 14 hp
Fourth Ring - 17 ap, 17 hp
Fifth Ring - 20 ap, 20 hp
Sixth Ring - 24 ap, 24 hp
Seventh Ring - 29 ap, 29 Hp
Eighth Ring - 34 Ap, 34 Hp
Ninth Ring - 40 ap, 40 hp
Tenth Ring - 45 ap, 45 hp.

Despite what that looks, the tenth set of ring's give a nasty amount of 45 ap/hp each. However, to get that, is a rigorous amount of forum events.

They are more of a leveling type of system.

In order to get to that tenth ring, you will need 2 of the previous rings to get it. Likewise, you will need 2 previous rings to that to get that one, and so on, and so forth.

I started at a base of 10/10 for each, and multiplied them by 1.2 going upwards, towards the 10th ring.
Thus why they are increasing more and more as they go up.

I want to try and make the forums more active with adding forum events, but I can't make up on that seems to suit everyone so far.

Now, let's look at the facts here.

You need 2 1st Rings, to get a 2nd Ring.
You need 2 2nd Rings/4 1st rings to get a 3rd ring.
You need 2 3rd Rings/4 2nd rings/8 first rings for a 4th ring
You need 2 4th rings/4 3rds rings/8 2nd rings/ 16 first rings for the 5th ring.

With that said, it's safe to say it would take you about 30+ forum event wins to reach to that level 10 ring.
(16 wins just to get a level 5)

And considering the numbers of user we've been having(at least 20+), and if everyone can participate, I don't see how this can be overpowering.

Added (2009-09-22, 2:10 Am)
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NOTE: THIS IS JUST A BASE EXAMPLE OF WHAT IVE BEEN THINKING FOR THE PAST MONTH.