You think that it's a greater waste of Larian's time to individually find and tweak each instance of overly repetitive dialogue instead of doing a global fix (of say, "one minute of silence between finishing and restarting dialogue") which would solve all the problems at the same time?
I think your "global fix" is akin to using a chainsaw to file a fingernail. It's overkill, and will likely change far more for the worse than for the better. Of course, you've already made it clear you can't stand the chatter in the Cyseal marketplace, so overkill is probably exactly what you want.