everyone has the same chance to get them done. If you want to see something changed, feel free to make a post in feedback.
Nope, who is not playing this season and will start on the 7th will be able to get all triumph that give points, and not this
There is still one more IB, everyone has the chance, if you are sitting out season 6, you are sitting out on the points. Again, if you want to see it changed, post in feedback as the community managers and devs that make those changes do not review the help section.