Champion Selection options

When we type out the word "Marksman" every marksman character show up, mainly every ADC and a few others So why don't we have a option to create a version created for us and when we type out "Mid" we select champs we want to show up there are to many champions to count now its hard to know your full list of Mids Overall it would make champ select not only faster but more enjoyable because if i get autofilled or playing any role i just type out the role and i see All the champs i'm already comfortable playing in the list Example: i never play top so i rarely know any of champs and i can easily forget about champions so when i get auto filled and i don't know what to do i type "top" and the champs i like pop up like
-just that when i was a ADC main and someone picks i have all the marksman on my screen to look at and see what work in my comp or vs the enemy comps just when i'm mid i have so many options all over i don't know how to narrow them down

Thanks for the Time