I'm surprised this hold doesn't have many on-topic comments, because I felt that this was easily the best of the Witherwood holds, or at least the puzzles were the most interesting to me.
Each level has a very clear visual theme, often with a slightly more loose (depending on the level) theme to the puzzles. It begins with some relatively simple lynchpin/manipulation, moves onto a much more lychpin-focused approach to the main custom monster from Below Witherwood (an approach that I preferred), and is slightly more general after the citizen and rock giant level after that. Each level has a mix of difficulty, but overall it gradually increases and there are some very tricky rooms towards the end.
If you like lynchpin and/or manipulation rooms, this hold is definitely worth a look. And personally, it was very enjoyable to see calamarain's style as an architect slowly develop throughout the course of this trilogy of holds. I can easily see how he was chosen for a SMS.
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aka VioletPumpkin