Probably a new topic would have been the best idea for this question/concern, but I'll throw in a response anyway:
Art is subjective so we all may disagree on what the game looks like or is going to look like, but here goes. I'm surprised to hear the word cartoonish used to describe the art in the game, I definitely don't think any of our artists would use that word to describe the artistic vision for the game. Cartoonish or childish, no. The game is being built for the PC/Mac , not for phones or tablets. It's being made for people that play PC RTS games, not for Clash of Clans or Candy Crush fans.
We fully agree, we've got LOTS of work ahead of us in terms of art, animations, and FX - hell a few weeks ago we had grey boxes for some things in the game and far fewer animations and almost no FX - those were jammed in for GDC and the video/screenshots. We really are pre-alpha and concentrating on iterating on the game to make something truly fun at its core. Until we are happy with that, playtesting and iteration are going to trump art.
I don't know if that addresses your concerns/questions, please feel free to start a new topic if you'd like to discuss further.
Now back to your regularly scheduled introductions...