I'd Suggest Pvp Rental items and Mvp Rental items
Example:
Pvp Armor: Resistance to Water, Fire, Earth, Elements 10% Hp/Sp +5%
Mvp Armor:Less damage from Boss monster 20%, 5% chance to Increase Crit Rate +100
or something along the lines of that
Pvp Boots : More damage against demi-human 15%, 10% more MATK
Mvp Boots:Agi +10 Vit+10 chance to cast lvl 1 Magnetic Earth when receiving damage
Pvp Cloak:Decrease Vit Defense by 30%, 40% Reduction of Neutral Property, Hp/Sp +5%
Mvp Cloak:Hp/Sp +5% Flee Rate +25
Pvp Helm:Reduce After Class Delay 20% Enable Lvl 1 Sight and Maya P affect Str+10
Mvp Helm:Maya P affect, Small chance to cast Lvl 1 Beserk while attacking and Str+10
just some ideas off the top of my head