I still don't understand your reticence on role coding, it costs us nothing and changes nothing other than to assure that when someone does claim they can show they are claiming the same role they came up with on day 1 before being able to see anyone else's claim or coordinate with someone else. It's entirely pro-town, so much so it borders on gamebreaker, and I'd accept someone objecting on those grounds, I'm scum often enough to sympathize, but it certainly doesn't hurt us now, in this game, if we're town. There is literally no disadvantage to having everyone code their roles except the time it takes and that can't be your argument considering you proposed more coding.

Now, as to self-selection versus random selection for prosecution purposes, random is better here, because it makes people go back and examine fresh ground with an inquisitive eye and some motive to look deep. We're asking people to rummage through another player's posts intensively and present a summary, you know we won't lynch someone for concluding someone to be prob-town or neutral instead of prob-scum, only if they clearly didn't make a solid effort, which would be truly anti-town. The randomness merely ensures every player gets inspected and no one skips, it's 100% coverage instead of having everyone dogpile onto a handful of players on the grounds that that player had something vaguely suspicious raised already, which helps us little since that would be stale info. Your rebuttal to the idea, that people should be doing it anyway, makes just as much and considerably more sense when applied to your own plan.