I'm in, but I strongly urge you to reconsider the strict 'no edit' rule.
With a thread subscription and e-mail updates, it's easy enough to check for significant changes in content. Anyone caught making such changes for deceitful reasons will presumably be ejected from the game, and suffer everlasting disgrace.
There are, however, entirely harmless edits, such as those to correct grammar, spelling and syntax errors. There are also edits for reasons of decorum (for example, I once edited out a rather mean-spirited post, when I realised that it threatened to spark an unnecessary - and entirely OT - argument) or to avoid multiple consecutive posts (which, as I learned recently in a game with no edits, can become very annoying).
I suggest asking players to make it clear why they have edited a post, either by posting "Edit:" before an addition, or by explaining in the 'Reason for Editing' box. The knowledge that this can be checked (and that the consequences will be severe) should prevent anyone from being foolish enough to change something substantive.