My upcoming game is obviously Semi-Open, which I think is a significant enough difference between "Open" and "Closed" (and a well-defined enough difference) that we should keep that taxonomy.
And I agree it is Invented. It's clearly not Standard by the "on mafiascum wiki" rubric. And some (arguably most) of the roles are newly devised for this game.
That all said, I still think it qualifies as "Normal," for two main reasons:
1. In an Open or Semi-open setup, you can have more leeway with "Invented" roles in the mix without running afoul of players' expectations. They know exactly what to expect because every possible role is public knowledge. And there are, I think, no roles in my game that clearly cross the line into "role madness only" or "bastard only." And everyone playing will know those roles, and if the community disagrees, we can hash that out before the game is played.
2. There will be a sizable contingent of Vanilla roles. This was mentioned upthread but I think bears repeating. I agree that the key hallmark of a RM game, as opposed to a Normal game, is that the focus/emphasis shifts to roles and role interactions, rather than day scumhunting. However, that's a fairly difficult standard to objectively apply. What is more objective? The number of Vanilla players. The more Vanilla players (and by that I mean both VTs and Mafia Goons), the less emphasis there will be on role interactions, and in contrast the more emphasis there will be on the day game.
So how much Vanilla is enough Vanilla to be a "Normal" game? This is of course open to discussion, but I think the minimum baseline should be about 30%. In a 13-player game, that means at least 4 Vanilla players (VTs/Goons).
PPE: 6. Haven't read them yet.