With regards to listing roles, that won't be too useful, mostly because there are a lot of hidden roles (I saw someone say that Medieval I had no players without some kind of power.
My role, for one, is potentially very powerful, but at the same time potentially very useless. And a known role would really be helpful to me.
Also, C'nor, there are a few other options: Rogue could have been voided (not sure if it's been claimed), or some other similar idea (given what appears to be several roles with semi-random/unknown abilities)
Can someone not taking big tests this week compile a list of claims? That would make it a lot easier to figure out who still needs to be pressured/who is claiming the same role.