Im making a c# dll (Its not a exploit dll) any suggestions

So im making a dll that makes it easier to do c# code and makes stuff shorter and makes things easier to understand any suggestions on what i should add some of the things i have are below:

Updater:Makes it so you can update your app remotely

Loadtxt file: I hope thats self explanatory if not well then it just loads a text file into a variable or the text property.

Wait: makes waiting easier so now if you type in 1 it waits for 1 second instead of 1 millisecond.

Notify:Will create a message box with a title and caption.

DownloadFile: Downloads specified file from the internet

print:exact same thing as console.writeline .

input: if youve coded in python you will know what this is but its just console readline

openApp: Will open a specified app through file path

openLink: Opens link provided 

getString: Will download all the text from a website.

So if you have a any suggestions type em any help is appreciated.