Delete the Mentor system or rework it.

[Niobee]

Most mentors I've encountered either say nothing at all

You make it sound like this is something bad. I stay silent for most of my dungeon runs because I don't feel like talking.

[UkcsAlias]

I stay silent for most of my dungeon runs because I don't feel like talking.

I think this has to do with the many buttons you already need to press anyway. The moments i notice most talking are at the start, the end, and after a wipe.

The end and wipes are usualy when feedback or excuses happen. And in extreme trials some people quickly just gave the general guide to explain the boss mechanics. For mentors themselve i rarely had any interaction, even if i sometimes asked about a mechanic. But i also think that this is how it should be, mentors that are aggressively trying to teach others are usualy not good as they dont seem to accept a learning step.