Instead of fanservice, I think they are just simply living more freely and in the moment unbridled by the constraint of the watchful, controlling eyes of wk1 staff. It's a lot easier to get away with things on stage in front of thousands of fans live than in private with the staff watching and judging your every move. You can't fake the fondness in their eyes and actions and pass it along as purely fanservice. Anyways, long live Haobin