Not exactly a fair comparison because lili starts at 3 loyalty, but it starting as a weak creature might make it worse. I do think there is very little synergy between her functions. Idk if that will be a problem or not.
I'm no pro, but I think she's a good planeswalker. protects herself from early threats, gains card advantage, helps enable delirium, and the ult wins, plus it kills a nissa token a turn. Solid for a 3 drop.
Edited out decklist. Sorry.