My bet is that the elemental cycle will push unicorn to the middle tier.
Uni is in a strange spot now, but is a flexible clan to run different strategies, you can use many splashes and they look promising. Comparing to Lion, we have too much "only when attacking" card effects, and this limit too much the deckbuilding.
Crane and Lion are in a weird position now, they still can have decent results against scorpion (who is supposed to be the easy matchup) but against other clans they are struggling. Crane better builds atm are "weaker versions" of scorpion, that rely too much on Yoshi to win. The imperial cycle and phx pack were not nice for Lion and the clan is still "trapped" in the core set strategy. I think they are the most threatened clans to get the uni position after the new cicle.
Dont forget we will get Yoritomo and probably a 4-5 shadowlands neutral card too, propably great targets for gaijin customs.