First off, I thought Commons and Central Market (the two tiles in this expansion) was a bit of a mouthful for the expansion title, so I've tentatively renamed it to Market Town. If anyone has a better suggestion, please feel free to post it!
There's only 2 tiles in this expansion.
The Commons: An all green title with the word "COMMONS" written across it. When this tile is connected to a green, then anyone is allowed to add followers to that green even if it is already claimed, except for a player's very last follower. This would add the possibility of extreme rapid depletion of followers as everyone vies for control of a powerful green, and it increases interest in trying to close off a green.
Central Market: This piece looks like four roads converging at an intersection, except instead of a few small houses or trees that are usually drawn at such intersections, this tile has a marketplace (colored tents, wagons, etc). When the tile is played, all players, starting with the person who played the tile and continuing in play order, must claim either a road segment or a green on this tile. You are allowed to add a follower to a green or road that is already claimed only if there is no unclaimed green or road available. If a player has no followers to place, he/she does not have to place anything. We have been discussing whether the pig, builder and other special pieces are exempt from this "must place" rule.
My suggestions:
1. Replace the word "Commons" on the Commons tile with an icon
2. No barn allowed to be placed on a Commons. If a farm with a barn is connected to the commons, it scores 1 point for every completed city and is removed prior to the addition of followers.
3. Special pieces (including the big follower and the wagon) are exempt from the "must place" rule of both tiles.
4. Both tiles should have a "except for a player's very last (normal) follower" clause
Also, if anyone would like to take the lead on this, please send me a PM. However, I would prefer that those who are currently working on an expansion to finish up their expansions before they take the lead on this. I suppose if I don't hear anything by the 2nd week of June, I'll take this one up myself since I'm sorta in between expansions.
Edit: Changed title.