Return to Heroes of the Storm
I played it extensively in Alpha and loved the game until they made a change that totally changed the game for the worse, at which point I drifted away. I heard from my friends that they rolled back that change almost right after it happened because the community hated it, but the spell was broken and I was on to other games.
Now that it's officially released and I know my progress won't be reset I started playing again. It's easily my favorite MOBA on the market. I've been playing a little bit each day to finish the daily quests and earn gold. It seems to be a good balance for me. If I were to sit down and play it for an entire evening I would get burned out, but a few matches each day is perfect.
It's the most approachable MOBA on the market. If you've ever been interested in the genre but scared away by the horror stories, then this is the game you should check out. There are no item builds, no last hitting, and experience is shared across the team. It has all the core MOBA things I love and none of the annoying mechanics that I hate.
If you haven't taken a look at Heroes of the Storm yet, you should. It's free to play, so there's no reason you shouldn't give it a shot.