Since Rosé, Jisoo and Lisa doesn't have their own solo projects they get to perform different covers every time. We have gotten some of their most iconic performances like Swalla, Yuki No Hana and Coming Home because of it.
Now look at what happened to Jennie, every since she got here Solo that's all she gets to ever perform. Once the other members get their own solo we will most likely stop getting these amazing covers and will be stuck with the same song in every concert.
Not saying that they shouldn't get them, just saying that appreciate what we have in the meanwhile because it probably won't last for long.