Same thought for Pumpkin. Her only good ability for me is the +15% ATK x pests number. And it's far from being the best ability. To be better she needs at least a new ability AND a good buff on her ATK buff turn one.
She has good HP and low average ATK and DEF. Her skill is not bad but don't really fit with her abilities. It's better on girls more focused on selfish buff.

And her regular Pumpkin version is better. Even if she is not that good.

To be honest, I'm afraid to roll that gacha and try Easter Cactus/Holly just because she is here. And knowing my luck, I'm able to get her since she is one of the weakest rainbows (or at least the weaker later rainbows).