Cumulative number of GW detections (dashed lines) and corresponding KN counterpart detections by Rubin (solid lines) as a function of the sky localisation for upgrade configurations of the current detectors; LVKI and 3A#. As a comparison, we show ET alone and in a network with LVKI. The top panels refer to ET-Δ, while the bottom panels to ET-2L. The shown results are obtained using the fiducial population, the BLh EOS, both the uniform and Gaussian NS mass distributions, and 1ep strategy.