Mana vs Resourceless champions

I've always enjoyed top lane and mid lanes but I feel as if a resourceless champions like yasuo, garen, or katarina always have the advantage cause they can out sustain anyone. This is mostly because I just got smacked down by a Yasuo top lane while i was playing Sion, a less mobile and mana using champion. I could never land a Q He'd always have his skills and can spam them while I'm stuck conserving mana.

In my opinion Riot should get rid of cool down-only reliant champions and give them a energy system such as alkali shen and zed, that way they can still have good sustain but not be able to freely spam all their abilities and only building cool down reduction to become unbeatable in lane.