See I've done the same except i came back in Robin's banner, spent all my stored tb power on level up stuff and relics for characters i couldnt be asked to build before i left, finished most of the story in one go, railed the Honkai's Stars in banner pulls (got e0s1 topaz and then pulled robin in 10 separate pulls) and came - to the end of penacony's story.
14:37 I think you’re misunderstanding the value of speed in this game. This piece might very well be better than if it had actually gone into crit. The piece itself is actually insane.
I understand i also love speed stat, but too much speed would be suboptimal when you have units like sparkle or bronya on the same team, unless your unit is speed scaling, and the only speed scaling-ish unit in the game is the one i dont have lol