Hahahahaha! Variant: Your builder is used to allow you to add tiles to a road or city beyond the nominal limit of play!
Haha, Genius!

A Builder Variant out of a discussion on table edges.. +1 merit
I love it!!

I would suggest to completely redefine the Builder rules:
In order to be allowed to place a tile outside the agreed playarea (referred to as „playarea“), the builder has to be placed
first on a tile inside the playarea on the specific feature that will be extended later into the new area (referred to as „new space“).
A builder can be placed during the move wood phase on any tile on any feature (road,city, monastery- on the monastery tile) in the playarea.
The feature may already be occupied, this means the builder can be placed on a tile on a feature together with an already existing meeple.
But a builder cannot be placed on a feature that is already occupied by another builder.
This also means when playing with the phantom, that the builder and the phantom can be placed on the same feature on the same tile!
Only the player with the colour of the builder is allowed to extend the feature into new space.
All tiles placed like this with the help of the builder into the new space become immediately part of the playarea. Therefore, a builder can be placed on these tiles on other features, too, in order to further extend the playarea.
Special tile placement rule: a space in the new area where there are already tiles on 3 adjacent sides can be filled with a tile
without the help of a builder.
When a feature with builder is finished, the builder is returned to the player.
At the beginning of the game, the playarea is agreed on by the players. My suggestion would be: 2 tiles next to the start tile in each direction ( = 5x5 tiles).
Each player gets 6 builders (I think one or two is not enough)
Hahaha!
