Tbh T7 was not well-designed at all. If you had enough dps you could skip some of the voices, making it impossible to keep the Renauds petrified to avoid the next Shriek. Basically it was just like Ifrit ex: too much dps? Too bad, you wipe.

Now, T9 IS one of the best tuned fights I've ever seen - and I am pretty sure that it's still going to be the main roadblock.