What is going to happen in these trust levels?
You can use Groups to give people more access to stuff. You can have a virtually infinite number of groups. You might also use badges to do whatever it is you think you’re doing with trust levels, I think.
What do you envision being different for your 8 trust levels?
Are you using Discourse now? Is there a particular problem that you are trying to solve that you think having more trust levels would help with?