For turn based setup, Flame Lily and Geum are definitely interesting additions as they offer def buffs to put up some survival so that you actually reach 3 turns. (So u can actually use turn based effectively outside of Laeva/Scene 3)
Flame lily might not be as viable due to lack of atk buff which can be dangerous against all these high def enemies nowadays, but she would still offer 50% boss dmg and 10% skill dmg by turn 3 which is good enough.
Geum is an good alternative if you don't want/need Cowslip for negate, extra tankiness overall can be more useful than a single negate.

Speaking of which, all these recent turn based buffers has allowed RR to break 5m dmg in RB's.
https://twitter.com/yukyuokoku/statu...85068145389574