As far as I know... as the updates roll in we're gonna see more raid bosses that are unforgiving to stalling teams... right? There was also guild orders (or was it tower?) that require you to clear certain quests in a number of turns...
Definitely a fan of the stalling playstyle, but eh, I might as well change things up a bit.
From what i see, most content post Wind Ult raid has rather strict dps check, so yes, stalling in general is unlikely to carry you too far.

Guild order second week has a quest that requires you to clear the last stage in 15 turns.

Most high-tier boss simply has too much damage or some mechanic that can easily overwhelm your stalling: Fire Ult with meteor spam, Light ult with 20k death beam, Water ult with 20k double snake and water res down, Acc 5 with 50k+ aoe by 5th turn.....

Special mention to Guild Order Dullahan, who has a special move instead of normal attack, and that is apply DOOM on 1 Hime (which mean BP actually harm u instead, coz her burst is just aoe dot).