1. Talisman was last seen in Latveria possessed, along with all the other Marvel mystics, and was attacking Dr. Drumm and Dr. Doom. Where she went after that I don't know.
2. Unknown. Last I saw Kara was on Utopia. Whitman's whereabouts and status is unknown.
3. Northstar is still an X-man. He was teleported to Canada by the Great Beasts to help Alpha Flight fight the Chaos King and will go back to the X-men at the end of the Chaos War.
4. Shaman was able to keep their souls safe and together in the afterlife, but Puck was sent to Hell where Shaman didn't dare go. When the realms of the dead were destroyed AF was ejected to the realm of the living and teleported to Canada like Northstar and Aurora were by the Great Beasts.
5. It was Guardian, Vindicator, Shaman, Snowbird, Puck and I think Earthmover who took the Plodex home. Not much was said about their return other than they came back at some point.
6. All that was said about the temporal clones is they were sent back at some point after the real AF returned from space. No details were given.
7. I can't find any name other than the "Elder God's Dimension" for where she's trapped.
8. The real Heather had the baby in an X-men Annual.