Winterer peers as others said might refer to some kind of migration from worse to better environment.

I might be delusional, but that might mean that somehow ascians from other timeline (in which WoL dies, and G'raha Tia summons Crystal Tower to the First) can't progress with their rejoining plan (or because of alternate timelines they have other plans e.g. something like Fandaniel that life has no meaning and we'll die someday)

After reading this it's stupid theory, but there's possibility that SE might use someday in some expansion that alternate timeline, because it still exists, but as for now It might be better to just wait for 7.4 and 7.5 than trying to deduce what 8.0 will be about, especially when we know nothing of "Winterer peers" intentions (I think that "peers" have slighty different plan than Calyx, and they're just using him for their own purposes)

We know at least that Calyx's primary goal and Winterer peers goal is to reclaim Azem key, but besides traveling between shards we don't know what it's capable of (Maybe it's something similar to the Alexander time travel or Omega's dimension travel)