For reference, the regular Cirno is the real deal after reincarnation.

If you enhance her, her Last Word damage is insane! The base stats get a huge boost. They even fix that ruined skill where you sacrifice physical attack for magical attack. No more stat sacrifices! Plus, it adds extra spirit recovery. Regular Cirno is the hope for free-to-play players in terms of water element. She's always going around saying 'I'm the strongest, I'm the strongest!'... While she might have gotten branded a fool by the official manual in Touhou 10, you can probably trust her power in Lower World.