Enceladus exhibits persistent cryovolcanic plume activity driven by tidal forcing and internal energy dissipation. Previous studies have primarily focused on short-timescale variability, including orbital tidal modulation, plume brightness fluctuations, and local jet dynamics. However, the possibility of longer-timescale organized variability remains insufficiently explored. In this exploratory note, we construct a composite plume activity index (X(t)) from normalized proxies