Champions Without Limits

If your favorite champions weren't restricted by the gameplay mechanics, what could you imagine them doing? Would they be horrifying, inspiring, almighty, etc.? What'd be their full potential?

If you've read her supplementary lore and perused her Q&A's, you know that Rek'Sai is far larger than she is in-game. I believe she's roughly the size of a small building, or at least a large tank. I actually can picture her leaping out from the sand and tackling a caravan and destroying it with sheer mass. Nimble runners wouldn't fare well either; her tunnels probably wouldn't collapse in such a short time as in-game and would cover greater distances. Rek'Sai would be actually inescapable.