I can't really see KC making a change, given it would likely involve putting in a new structure around a new IGL if Zeish moves back to assistant coach. Given they took time off between the end of Split and LCQ odds are the roster stays as it is.
As for teams that need players of the tier 2 pool, its very difficult to determine because teams playing in ascension aren't exactly likely to have players want to leave their assentation team who would be playing for a stop in EMEA anyway.
Heretics, are in need of an Initiator player which is a really space role if your not looking at Ascension teams. I'd say a really good option with tier 1 experience is probably Braveaf. Another could be like vicious. Its really hard to pick iniators out of EMEA that arn't on ascension teams.
It pains me to find an emergency player for vitality but I think (in the instance where they don't qualify) I think Hyber is the best choice. Has experience working with bone cold, has played on Lan. Seems like the best option, but also feels wrong to be talking about an emergency fill in so soon.