Get Enzo and emiL out. Liquid's strats have looked horrible and Enzo's fragging is subpar on his best maps. Sign zeddy from KPI to replace him, then in an ideal world Bonkar would come back to EMEA and sign but if not Onur from CASE could be a good shout.
Get rid of one of Mistic or Jamppi, ideally both. They're both incredibly inconsistent, having a life map every 5 maps and just underperforming for the rest. 1 player like that is workable but not ideal, having 2 means your team just won't be able to accomplish much. To replace them, ideally you'd want to try and steal Cloud and Sheydos from GX and KOI, but if not honestly soulcas has been absolutely smurfing in Polaris and consistently performing, could have a second chance on Liquid. Then nukkye if he's still looking to compete in franchising.
Finally, the question of Keiko. He's looked fine, but honestly I think Liquid could do with an upgrade. B1SK, Lime, ALIVE or kaajak could all work, but depending on how good his English is I think qw1 is their best option.
So the new Liquid roster becomes
Duelist - qw1/B1SK/ALIVE/kaajak/Lime
Flex - nukkye/sheydos
Initiator - Cloud/soulcas
Controller - zeddy (IGL)
Sentinel - nAts
Coach - Bonkar/Onur