New Champion idea based off Elemental Lux

Just an Idea but it came to me from looking at the Elemental Lux teasers. A champion that was an Mixed(AD/AP based) fighter mage. At the start of the game you have to pick one of the four main elements(Earth, Fire, Wind, Water). Then the characters abilities would be changed based on what element they chose kinda like jayce and nidalee with there 2 forms just this champ would have 4 forms.

Earth: The Earth element could make them a caster tank where they could have a shield for one ability, a defensive stat buff on another, and a single damaging ability on another.

Wind The Wind form could be a healer that has a healing ability, a wind barrier(short duration spellshield type of shield), and a wind slice for a damage ability.

Fire The Fire element could be a mix damage brawler. one that is auto attack based with on hit damage from abilites like one ability could be u activate and for ever auto attack it consumes a little bit of mana but does damage to enemies close to the target like jinx's rockets, another could be on each autoattack he shoots out a cone of fire behind his target this one consuming a little bit more mana, then his 3rd spell could be he heats up his body to increase his movement speed and attack speed for a few seconds.

Water Lastly, the water element could be a ranged AP caster. one ability could be a water jet that damages the first enemy hit and shoves them back a few units(minions and champions), the second could be u create a orb of water that hovers around you you can hold up to 3 at a time and they disappear after 1 minute or upon death and then with your third ability you can cast our these orbs in a straight like skill shot.

Ultimate for all of them their ultimate increases their ability power a small amount and increases the scaling on on their abilities. then at level 11 the get a second ability that increases an attribute based on the element, like water would give u a % bonus AP, Earth would give u a % bonus resistances, Fire would give you a % bonus attack speed, and wind would give you a % bonus HP.

Other Ideas Also you could make it where this champ could be a group of disciples to where the player picks the element before the match starts so people on you team know what your doing and that you are not trolling, and because of how diverse this champion is and him/her being a group of disciples both teams should be able to have one on their team versus just one player because this would be a very popular champion. or you could make it where the champions ultimate let the player switch between the different elements(like they would hit ult then q, w, e,and r would each stand for a different element so like to get to fire they would hit r then q) but the ability would require a cooldown that scaled to be longer every time they switched within a short period of time. but this is just an idea for riot to play around with i'm sure you guys have thought of something like this before.