Champion that grow or evolve

I don`t know if there was something like my idea or actually riot do or try to make champion like that but there it is. And sorry for my english .

It just champion created around his passive. You can call it "Grow up" or "Evolve" or something like that. It is kind of complex and hard. It kind of change this character every lvl or every few levels and it is changing him based on which one of his spells he max. It works like Ezreal ultimate skin but its dont change just look of champion but his stats and/or type of auto attacks.

For example If he pick on lvl 1 Q and its something like Alistars Pulverize or Mega Gnars Crunch then it make him every lvl he max that spell biger and give him armor and mr and he will have melee attack. Or his W can be some spikes or net that he throws that have ad dmg and CC . If he pick that spell first or max that he will get range on his attack and get bonus ad and E can make him more AP or if its shield it can give him passive that shield allies when they got under 10% of health And R can give him all bufs but only some % of it for few seconds. Or it can be something like Karma`s R but it will help him lvl up like give him more xp when he activate R and kill unit while activated.

I dont know if its making any sense because i am not good with english.

It`s not like or and not like and . He grow up or evolve like changing form like but stay in it and he change not his spells like Viktor and Kha....

So my questions are - What do you thing about this concept? Is it any good ? Was there somebody who alredy said or wrote somehing like that? Would it be posible to make champion like this ?

Would you like and play champion like this?