Now I understand that every feedback from DT2 participants is a big responsibility.
That's what all new DT2 members need to know, and they need to be prepared to defend every feedback they leave. It's an almost certainty that if you leave a neg on someone, it'll get challenged either by PM or in a thread, so all the new DT2 members should be prepared for that. I'm pretty sure DT1 knows this stuff already.
To be honest lot of here even don't know where should leave what kind of feedback. So if there is few suggestion's then we can learn from it especially who is totally new.
Leave appropriate feedback with a valid reference link if it's a neg, and be careful who you give positives to. I've already said that, but it's the best advice IMO. Nobody is forcing any new DT2 members to start leaving feedbacks, so hopefully none of you feel pressured to do so.