I also played Hearthstone and my main gripe with it is that its simply too simple. Its like a card game for people who like things easy. Which seeing as how its made by blizzard i totally understand. But the one thing i like about card games is there being tons of strategy and complexity.
Thats pretty much what was going on through my head as i was playing.
That said if you like the game and have fun playing. Who cares about anything else. But yeah when u have some extra time i do think you should check out Infinity Wars.
Suits me perfectly lol. I have pretty much no prior experience with tcg's other than a bit of yugioh/pokemon as a kid and a very small amount of mtg. So I could use a simple one to get me going.