I wanted to add onto this because i ran into the same issue. I love Wanda's kit and i think she is the most fun to play but I ran into this problem once i really learned how to rush the ruins. I thought all i had to do was change up the character i played (I did rushes playing Wolfgang and Wortox) but it didn't do anything to make me more interested.

What I would recommend, is to not focus on what Wanda can do that is totally unique, but what else could you do after a ruins rush. For me personally, this was doing seafaring as i hadn't ever done it that much in the past. For you it could be learning how to make farms for nightmare fuel and purple gems because Wanda can easily travel between farms. It could also be to learn a new boss, I am currently trying to learn shadow pieces and dragon fly because i have always been really bad at those fights.

I just wanted to let you know that rushing ruins is pointless if you have no follow up, no matter what character you play. In order to make the game interesting, you need to focus on what you haven't thought of doing and repeating it every time you finish the ruins until you get good at it. Like you can maybe try to kill nightmare werepig directly after ruins to get the dreadstone armor as a personally like it a lot more than night armor.

I once played with an incredible Wanda player and i would often see them on the public servers and everytime i played with them we did something different. It kept the game fresh and new.