The Problem with Manaless Champions

Manaless champions are very annoying early game, but are generally given their mana-less state based on their lore and kit. For example, Garen only swings his sword in different ways, so he doesn't use mana. Ninjas, Monks and most AD assassins (poor ) use energy, as they just jump around and throw things (Lee Sin's jump, Zed's shadows, and Katerina's magic damage are not magic I promise). Even Riven, who uses a magic sword, derives her power from her sword and therefore uses no mana. However, aren't there quite a few champions who should fall under this category?

Caitlyn : Shoots things. All she does is shoot and lay traps. Plenty of people do this irl and, as far as I know, nobody in existence has mana. Corki : Same as Caitlyn. Darius : Swings his axe in different ways. Sure, the heal is odd, but then again so is a giant sword falling from the sky. Gangplank : Shoots, puts down barrels full of gunpowder, eats in a Runescape-esque fashion, and tells his ship where to shoot. Magic? Graves : Same as Caitlyn. Jarvan IV : Swings and throws his standard. Maybe his W is somewhat magical. Giant swords. Kha'Zix : Uses his insect body to perform his abilities. No magical skills; he would be better suited with energy. Master Yi : Attacks rapidly, meditates, runs fast. Meditate seems somewhat magical but it is based off of a mana-less real-life action. Giant swords. This one is the most debatable. Pantheon : Throws spear, attacks fast, blocks, jumps. His jump is exaggerated but... giant swords. Reworked Poppy : Gets her energy from her weapon. What's your excuse, Riven? Singed : Let's out gas, throws down slime, throws people, drinks some kick-ass energy drink. Not very magical. Teemo : Shoots poisonous darts, runs, puts down poisonous mushrooms. Not very magical. Talon : Sure, his blades levitate and he has rogue-like invisibility... giant swords. Xin Zhao : His only magical component is his heal... giant swords Riot, giant swords. . . . . On the flip side: Akali : Magical sparkling shroud and AP damage. Dr. Mundo : Magical healing powers and can summon salt. Garen : Magic shield, GIANT. SWORD. OF DOOM. Katerina : Magic damage. Other than this it makes sense. Kennen : Literally becomes electricity. Rengar : Healing, turns invisible like Talon. Poor Talon. Renekton : Similar ult to Nasus, which is magical. Shyvana : Turns into a dragon, breaths fire, fire circles around her without lighting herself on fire like Mundo. Not magical at all. Vladimir : ...How is anything he does not magic? Yasuo : Because controlling wind isn't magical. Zed : Living shadows and teleportation, along with a magical mark, definitely aren't magic.

I'm not saying any of these champions need changes. I'm just saying that, in many cases, whether or not a champion uses mana is not based on what the champion does, but on balance.