Interesting champion concepts

Hi, today I was thinking and in my mind come up the idea to some champions that Riot could make, or well, more like champions mechanics, thinks I think would be interesting but they aren't in any way in the game

1.Mana based tank:

Actually the closest thing to this concept is Mordekaiser, but he doesn't use Mana so it's not the same, and it's just like a temporal shield or heal, what I mean by a Mana based tank is a champion that stacks mana so he could use it as life or armor maybe, it could be a passiva that he loses mana instead of life and as he loses his mana starts losing life, or that an ability converts some mana in an extra life bar, something like that, I think is an idea that could be interesting to see

2.Crippling:

I've been thinking this sometime, and hell if I would like to see a champion that as loses life could lose an arm or leg or something like that, and maybe lose damage or movement speed, maybe change it's own abilities, I imagined it as a robot that separate it's body and assemble it, I think it's a very interesting idea with a lot of possibilities

3.Wall hooks:

Well, I'm still thinking how good this idea actually is because the concept is similar to what Camille does, but I think if it is well made it could work very well. The idea is about a champion that could put some points in the wall so he could then activate them with a rope and move around the map very fast(like hooks, and hang over them with a rope), something balanced, I mean I want those points to be something that you can destroy but, if you give it a bit of thinking it would be a champion with a lot of mechanics based on preparing the stage before fighting

4.Intangible things: This is the last because I see this as something that could be very game breaking, but since Bard was released I thought about a champion that could make things intangible, so a piece of a wall wouldn't be there except for it's look, you could see it but not touch it, but not like a tunnel. another example would be making the Baron Nashor intangible and making it impossible to attack him so it wouldn't be like paused but the thing is you can't attack him, things like that, I though you may do it with champions but, no receiving damage or cc sounds too broken and all

I had other idea but I just forgot it, anyway I want to know what you think about those concepts, I think they would make the game something different like I don't know, I want new mechanics to be explored, like the crippling one could make a champion with a big set of abilities and a changing way of moving around, but you are the judge, ty for reading, tchuss. [slayer-pantheon-rainbows]