Curate, connect, and discover
OKAY I KNOW IM INSANE BUT HEAR ME OUT:
During the final battle with Vander/Warwick, Jinx, and Vi... Jinx told Vi that even if they were worlds apart, she'd always be by her side.
And "what could have been" Powder saw our ("what has been" if you will) Ekko when he left. Then we were left on a cliffhanger in that scene where Powder lies the pendant down next to the hexcores... and during the last scenes of the show we get a flash of Jinx' drawings/graffiti... I do not have the scenes to support all this but WHAT IF?
I know I'm def just reaching here, since the ending, despite being open, still seemed pretty solid. Who knows though?