Well yeah, but she can be used for so much more than just explorations and puzzles. Amber seems like she can be so much fun to use in combat, but due to how unimpressive her kit is, she's usually cast aside in favor for much better archers. Just cuz she's a starter character doesn't mean she has to be cast aside as soon as you get someone better.
Personally, I think Baron Bunny could be Great as a full on Aggro sponge. You could use him to get attention off of Amber so she can flank enemies or just peal-out. And, of course, he can explode, so perhaps they could change the Baron to explode depending of the amount of damage it took. Then again, I haven't had the chance to play much, so maybe my perception is flawed. If so, then at least do something like make her run faster, or give her an ability that encourages exploration, who know. Just my two cents on the subject.
Unfortunately, you'll eventually find that Baron Bunny doesn't take all the aggro all the time and you'll find some enemies gunning for Amber while it's out. While you might get lucky from time to time and Baron Bunny goes well for you, it's kind of inconsistent, therefore not exactly reliable. Maybe be a little better if the explosion did much more damage than it does rn.