Shae Vizla was fixed in today's patch so that should be resolved and she should able to be summoned.
For Qyzen simply change instances then go back or log out and then log back in and he should be there.
For talos what is happening? Is it not giving an option to have him come with you. Are you an inquisitor? if so you can just recruit him directly. Please provide more details.
For blizz, make sure you choose the right option. I know there is an option that once you get full rank 10 with him, you can then choose an option to have him come with you It should be a third option, just need to see what the text says. If you hit Esc to exit the conversation it undoes what you have done.
If your still having issues, take a screen shot of what you see for the blizz conversation after you give him enough to get him to rank 10.
Sorry it took me so long to reply on this. It seems that most of these issues have been fixed. On Talos, nope, not playing an Inquisitor. I'm playing a Marauder. He says he'll be right behind me for the first part of the quest, but doesn't follow and I can't collect the relics without him. Keep in mind, however, that I haven't retried that particular quest yet, so maybe it'll be fine now. I'll let you know when I'm done. Thanks for the info.
