My expansion ideas

Hey, i have made some notes on my expansion (Helps me think) Does anyone think it will be any good? And what do ya think my exact story line should me? (I like to plan out things.)
My notes-
Shrine of the demon-
-Includes (Number) peices of (something) to make (something) to help kill him.
Key? sword? Something that allows you to get to him/kill him
Demon shrine, Key? To get in? demon is last boss.
Key- 10 peices? 5 peices? - scattered across the map, dungeons?
Dungeons?- Special legendary items> E.G. Legendary sword (name of sword) IDK
Legendary set of armour/weapons? Legendary warhammer,sword,spear,bow,dagger, helm chest legs boots. E.G. 10 dungeons on the map. (Hidden?)/Hard to get to?
Do NOT need legendary items to kill boss demon, it helps as they are strong.
>Big enchant space???< Already Enchanted???
^Useful for later expansions?
Storyline-
A Bounty has been set on this demon? many adventurers have tried and failed. it is your turn?
Demon is taking over the land, it is all courropted accept a few villages/citys? A desperate letter from the mayor of a city has asked you?
A demon is taking over an island? already taken over?
Spreading demons everywhere, demon island, /w demon shrine, (get key parts on main island?)
Demon island is full with demons, they are moving onto the main island?
Kill the main demon to stop him spawning(bring forth, create, father, generate, give rise to, hatch, issue, make, mother, originate, parent, procreate, reproduce, sire ) more?
My notes-
Shrine of the demon-
-Includes (Number) peices of (something) to make (something) to help kill him.
Key? sword? Something that allows you to get to him/kill him
Demon shrine, Key? To get in? demon is last boss.
Key- 10 peices? 5 peices? - scattered across the map, dungeons?
Dungeons?- Special legendary items> E.G. Legendary sword (name of sword) IDK
Legendary set of armour/weapons? Legendary warhammer,sword,spear,bow,dagger, helm chest legs boots. E.G. 10 dungeons on the map. (Hidden?)/Hard to get to?
Do NOT need legendary items to kill boss demon, it helps as they are strong.
>Big enchant space???< Already Enchanted???
^Useful for later expansions?
Storyline-
A Bounty has been set on this demon? many adventurers have tried and failed. it is your turn?
Demon is taking over the land, it is all courropted accept a few villages/citys? A desperate letter from the mayor of a city has asked you?
A demon is taking over an island? already taken over?
Spreading demons everywhere, demon island, /w demon shrine, (get key parts on main island?)
Demon island is full with demons, they are moving onto the main island?
Kill the main demon to stop him spawning(bring forth, create, father, generate, give rise to, hatch, issue, make, mother, originate, parent, procreate, reproduce, sire ) more?