What features would you want in a checker?

Hey,

I am thinking of making a checker, but I don't want to invest in it until I know people will buy it.

No checker can determine if a username is banned/deleted so don't say that.

It would import a .txt and export a .txt of avaliable.

What I have so far;

Gamertags
Instagram
Twitter
Twitch


What would you want it to check?

And how much would you pay?

There's already a few of these on the market already, if you wanted people to buy it just make it bloody reliable and fast. (Checks per second)

I would suggest Gamertags, Instagrams and Twitters as they're the most common.

Honestly, it isn't worth your time making one of these, since the market is filled with them.

IF you do make one:
Option to change how many checks per second 1-20 (Checks Per Second)
Don't put a bunch of useless Social Medium Checkers in it, use common ones that are actually good/worth something;
GamerTags
Instagram
Twitter
Twitch.tv
Tumblr

Im sure the checker I use knows if the tag is banned or deleted and it auto claims the gamertag if available.

Also yes checkers can see if its deleted. It just takes lots of code to make it work and in some cases money.