I was thinking about replacing DefaultTrust in the following way:

When users first try to view a topic in a Trust-enabled section, they will instead see this page and be forced to select some users to trust before being allowed to continue to the topic. In addition to the empty text box currently on the Trust settings page, up to 30 users will be suggested.

Suggested members must meet the following criteria:
- Full member or above
- At least one post in the last 60 days
- At least 10 people listed in their trust list
- At least 20 points (see below)
Each person gets N points whenever they are trusted by someone, and loses N points whenever they are distrusted by someone, where N = 0 if the rater is less than a full member and N = [rater's activity]/120 if the rater is at least a full member. The 60 people with the highest scores are selected, this list is randomly sorted with a higher weight given to people with higher scores, and the top 30 people in the resulting list are suggested.

When the change is made, everyone who currently has only DefaultTrust in their trust list will be redirected to the Set Initial Trust page.

What do you think of this?