lots of players reached max level got their dracula cape and so on.
Add a system so called Prestige, everytime you max up your skill(perks) and level you can prestige yourself to lvl 1 and it will be harder to obtain xp but you will get new perks for example, better drop rate perk.
- Reward for prestiging
Suggestions:
Unique name
Prestige symbol
Prestige item ( Each prestige contains a new item ) so lets say after 6 prestiges you completed the whole set just an idea.