Regarding to the ORPG, I have a few ideas for the spell and item.
Feature of spell system:
-Every spell is consist of about 10 level.
-For active spell,you cant level it by learning it again;you must use the spell for a given times to leveled it up.
-At the final level of the spell(lv10),your spell is considered as 'ultimate spell' and the power of spell increase significantly.Besides that,when casting an 'ultimate spell',it will having a special effect(every 'ultimate spell' has its own special effect/cinematic effect)
-The damage of spell is not constant,it is determined by your intelligent or mana amount.
-You can buy the spell at shop which give you a full custom character with custom spell
For example

For reference only)
-You must cast the chain lightning for (50 x level of spell) times to increase the spell level by 1.Of course ,the spell cooldown should be low (3-6seconds) so that you can cast it frequently.
-The spell damage is =200(at level 2)+50% of your mana amount
Feature of Item system
Regarding to the item system:We have 2 ways to improve the potential of an item which is
a)
imbued
-you can imbued an equipment with required material to increase the grade of the item by 1(which improve the stats of the equipment)
-however,the imbued process is not 100% success.You will have a random chance that the equipment will destroyed during the process,or the equipment remain but the required material destroyed.(of course,chance of failure is smaller)
-the required material can be acquired by killing the creeps and it will drop randomly.
-the maximum grade of an equipment is 10 and it's indicated by +10
example:mask of madness+10(highest grade among mask of madness;which grant the equipment more stats compared with mask of madness +9)
a)
Enhance
-This is another way to boost your equipment,you can enhance an imbued equipment;but you cant imbued an enhanced equipment.
-After you imbued the equipment to a desired grade,let's say grade+6 since you don't like to risk.You can enhance the equipment by specific material to boost the equipment stats(In general,the stats boosted by enhance is more than imbued the equipment since this is the final step to upgrade your equipment.
So,the typical step to upgrade your equipment would be imbued the equipment to desired grade,then enhance the imbued equipment
At last,I still have many idea and feature for an ORPG since I like ORPG,If anyone is interest,please PM me and I will share my idea