End of the World and Balloon Events

How about bringing these events back WITHOUT the cross server aspects.
Namely, make them more like the Great Evil events where all players can earn rewards.
For the End of the World Event, it was all about doing this one adventure how many times you can doing a period of time (I forget how long, maybe 1 week was it?).
So for players lvl 20 to 35, every time a player complete it, they will get 100 granite from the adv.
Player lvl 36 to 60, they will get 100 granite and 100 grout.
If a player completes 50 of the End of the world adventure during a week, the players would win a Gold Tower or a Granite Pit or a Grout Pit. Something like this.

The Balloon Event can be set up in a similar way.

Granted, it would also be great if you make the adventures unique to these 2 events available from the market or explorer searches. Only Old Ruins and The Shaman are available in the Market for gems at that.