Arena idea...

Maybe lets add arena?

Players appear in the tunnel and have to run in the center of the arena.
After a while, the doors to the tunnel will close and the fight begin. You have to destroy waves of enemies.
First are the mobs from the first levels of the game.
After each wave is randomly appear the boss from the same level.
After each wave all dead players appears in tunnel and can get to arena again.

If you are die, you will not get any loot and experience. If you don't want to wait until the wave finish you can as usual select the 1 plat or 5 plat option...
For sure, than longer you play than more 1 or 5 plat you spend. Why? Because you want loot )). The 1 plat option is acceptable for all players, so many offers to earn platinum for this amount. If all team die, they begin at the same wave they die.

And so till the last boss...

We can add hardcore mode for the ones who finished all levels. The hardcore mode give you the ability for better drop rate. So lvl 1-10 mobs on hardcore mode will be a bit stronger than the Fang mobs. Technically you can just add them 4x or 6x damage and armor rate..

The items drop will be the same as on normal 1-10 lvl but with for the first wave, lets say 10% better luck. Experience is charged with the understated figure. Why to do that? to avoid hp runs at arena and to keep alive the story line.
Also we can add some vanity prize for the one who finish the hardcore mode. Oh, besides the normal pvp mote its good idea to keep the possibility to use thrasher elexirs.

So what we will have it the end? On the one hand a good business model for the developer. The new source for platinum in such services as elixirs and return to fight with half health, or with full health and temporary invulnerability. On the other hand fun for the players from the appearance of a new kind of competition. Balance retained, the team will still be able to pass the arena without the use of platinum. We'll have a re-run some of the waves.

I think this arena will find its audience. Many people like these maps in so-so many other games. Also, lets add new tab - arena )) and count mobs kills and deaths.

Thank you for attention.