Next should be Adlay. Then Zinnia, Bamboo and Corbett. If they do all the ancient knights in a row and don't add other limited girls between.
Also, save 100 gems for the golden week reroll gacha. You MUST not miss it. Even for Adlay or Zinnia.

Original Honeysuckle is not bad even now but less good than her easter version and way below Adlay/Corbett/Zinnia. Actually, she should works well with her Easter self now. But if you don't have the gems, you shall pass.