Are we ever going to see an ADC with Energy ?

Very unlikely. Energy as a concept is better suited towards champions that are very reliant on abilities for their damage. It lets you give them the ability to get full combos off whenever needed, and gives them staying power in lane, but limits their ability to spam in extended fights unless they get their energy back with refill mechanics. If you have an autoattacker, they don't need to play around that energy regen game outside of the laning phase because they can just fall back on autoattacking. It devalues the concept.

They said they will never release resourceless adc, and thank god for that.

Yeah AD Kennen

no, energy has a quicker regen than mana, the adc would pretty much be able to spam abilities

This concept is great but unless they had ridiculous cooldowns. An adc that can sustain with lifesteal AND has no mana so they can ALWAYS stay to fight or assist in more ways than AA.

IF a champ like this was created it would have to be limited by it's mobility. Maybe first champ to not be able to take flash.

It would be too powerful, manaless harass in lane? Nope.

I mean, assuming you build Gnar like an ADC and don't mind his shit AA range early, there you go

As Sightless66 said. Energy is meant for assassins, someone whos dmg is in their abilities, not their autos. Make an adc who does tons of damage with AA, and with abilities it will either be perma banned and you will never see it or itll be so weak it wont even be worth playing. Take a look at kalista, shes a nightmare for every single melee champ and look what riot did to her.

depends what theyd do for it. maybe the auto attacks themselves would cost energy depending if they hit champions or minions