I don't think the marmots got that big. They're still pretty small at the end of the day. Big enough to see the details, but small enough to not take the attention off the truly large monsters.

Even if some adjustments might be beneficial, looking at the big picture it was a good change. And the best of all, it was probably not that hard to implement but the benefits are clear. Hopefully the same happens with the battle effects. Even if they can't overhaul everything at once, the next best thing is to make smaller fixes that make as much difference as possible.