I re-rolled the ending about six times, and I never got an ending for Astarion. I completed his quest, with the option that should make for an interesting ending but because of the no-epilogue, no-slides, just RNG chance to get dialogue from some but not all of your companions, no idea what happened. I don't even know if the tadpol dying means hes back to being a control by nature vampire? who knows, I don't. I guess he's happy he made a joke about something Minthara said on the dock in one of the ending discussions but otherwise he didn't exist.
