This could very well work. Just to be complete here you can find info on trustlevels in Discourse: An Explanation of Trust Levels
Member (2)
Members keep coming back to the site, and have participated long enough to earn complete citizenship.
They come back often enough that you know you’ll see them again soon – they can be trusted to be present enough to actively participate and be held accountable.
They can get to trust level 2 by…
visiting at least 15 days, not sequentially
casting at least 1 like
receiving at least 1 like
replying to at least 3 different topics
entering at least 20 topics
reading at least 100 posts
spend a total of 60 minutes reading posts
*Users at trust level 2 can…
Use the “Invite others to this topic” button for one-click onboarding of new users to participate in topics
Invite outside users to PMs making a group PM
Daily like limit increased by 1.5 ×