Practice Tool suggestion

Hy, today I was playing and I remembered something that could help players a lot.

What do you think about if we had all the champions avaliable in the Practice tool like the riot do with the champions of the week but in this case with all the champions?

We would be able to test any champion at any time to see if it would really be worth buying it or not, and we would not have to wait for him to come out on the champions of the week.