I certainly don't want any effects like what was used in Journey to One. For example, if someone has a good Australian accent and wants to audition for Pohatu, but thinks their voice is too high; modifying the pitch in post to make it sound deeper is fine.
Your edited lines for Kulta were too low for my liking. It's straying too close to my Lee Tokar Makuta impression when you make it deeper, and would make conversations between Makuta and Kulta slightly confusing. The second edited voice sounding like a brainless brute could work for Basher, since that one was REALLY low, so take notes everyone.
Overall, my opinion on voice modulation I think varies from character to character. If someone wants to pitch down a Kopaka audition, not an issue, but Kulta especially is where things become a problem.
-- Also, @JediTimeLord824, I cannot access your auditions on YouTube. You might want to try linking it while not on your tablet as you hypothesized. --
EDIT: Nevermind, I managed to get to it through your Tahu audition.