AR URF suggestion

I have a suggestion towards Riot Employees that run AR URF project. Since you made everything random which can be ( and in most cases is ) unpleasant for a lot of people, why wouldn't you add an option in the future that would let us make our own champion pool on maybe 20 champions ( and make it so its not "broken" for an example that you HAVE to put 5 assassins 5 mages 5 adcs and 5 fighters or whatever in that pool ) so we can enjoy playing champions we like.