Wow, thank you so much for the thoughtful comment and critiques!!
You nailed it, missing hearts is by far the easiest way to lose, and if I were to give players one bit of advice, it's "prioritize hearts." The "floatyness" of the head was an accident that we decided to keep because we liked that it added a little disruption to the right side, but we did hold mixed feelings about it the entire time.
In terms of pure game mechanics, we didn't really mind that the right side is less important than the left side. To be honest, most people have found our game to be much more difficult than we expected, and I think missing X tasks and losing would just be...too brutal. If you manage to stay alive for 2-3 minutes, the right side gets insane, which in my opinion is when the game gets really fun (in retrospect, could have made this happen faster, which was my fault). You basically reach a point where you're constantly grabbing and missing tasks and it's very chaotic, and I'd rather not cut that short. It'll end soon enough anyway, haha.
In terms of flavor, I think of it like this: Fighting crime is deadly. Your personal life can be in total disarray, but if you slip up on the battlefield, it's over. Relationship problems won't kill you, but being distracted by them while fighting could.
I do like the idea of adding some depth to the right side though, where neglecting it is reflected in some additional way. And I think if we were to work on the game further, one of the first things we'd do would be to at least tone down how floaty the head is.
Thanks again for taking the time to try our game and give this review! We really appreciate it!!