Challengers Tower

I noticed there's not much to accomplish besides getting full gear and taming all the familiars
so I'm writing this to make a suggestion that can be added in the game to extend the players ability to interact with more.

Okay so basically, if there was a tower per say called challengers tower where players can go and challenge it daily, and everyday if the player is successful he/she will be able to pass a floor to the next floor above, the tower can be like 100 floors for example that extends all the way to level 60 or whatever the max cap will be and each time a player passes a floor they will obtain a challengers coin, to which hey can use for a certain number of things in the challengers shop.
To avoid this being farmed, the one floor a day option is the best, if a player fails, they can try again on the same floor the next day.

The challengers tower may consist of normal mobs at first, then later on bosses or heroic/legendary familiar's to fight (maybe every 5-10 floors), thus will put the "challenge" in challengers tower
Solo challengers tower would be most efficient because only the best of the best can achieve it but another solution is a group challengers tower where a group of 4 people from a guild can attempt to challenge it.

Challenger Tower Shop

shop may have a few number of rewards you can exchange the challenger coin, for example
Coin may be exchanged for :

- Gold
- Guild Exp
- Character Exp
- Heroic/Legendary Familiar
- Challenger Cosmetic
- Challenger Gear
- Pets
- Etc Etc

Post your thoughts below.