Vocations:
Mage:
- Ice mage (giving ice stacks to monster by hiting with spell, each stack increase dmg dealt by 5%, max 50%, on last stack monster is stunned for 1 second) Low dmg damage, supportive, frezzing monsters, good in party, weak solo.
- Dark mage (dark type moderate damage spells, ability to cut cd time by 80% for 5 seconds, cd 1 minute). Damage and supportive.
- Fire & Poison mage (high damage over time spells), good pve 1 vs many as 1vs1
- Cleric (healing, ability to give 10% exp buff, ability to make party immune for dmg for few seconds)
Archer:
- Assassin (using daggers, fast attack, moderate damage, close combat, ability to make 1 clone to help (50% of user stats, looks same as user), some dodge ratio.
- Hunter (high damage, using bows, deadly 1vs1, ability to silence enemy).
- Sniper (piercing damage aoe, using crossbows, good in fighting large group of monsters, rising critical damage of team).
Warrior:
- Crusader (light type attacks, using both physical and magical attacks, high damage if well geared, low if decent. Ability to heal themselves, reduce monster's defence, good in solo/party, using maces and shields)
- Berserker (2-h axes huge damage, ability to rise critical hit ratio of party)
- Paladin (High hp, low dmg, ability to provoke enemies, ability to rise defence)
Others;
- max party 5 ppl ( to dont make too powerfull gathering all vocs together and give people ability to make strategy.
- critical
- critical damage
- random stats of items
- raids/dungeons
- boss mechanics (changing place, got more ideas here)
- crafting
- mounts
- many many more
Its acctually simple. Without too much effort and following Magneticos tips for a new OTS: Start small and update. Either custom or evo map. Update weekly keep players tuned, give reqards for first killing bosses discover unique events/quests... 
