Additional equipment needed: 2 six sided dice with the faces marked
red, green, blue, yellow, sacrifice, and wild.
At the start of each player's turn that player rolls both dice, and then
takes two actions. The color of each action is determined by the colors rolled. (The rule requiring the color be available in the system where the action is being performed is unchanged. The dice just, sometimes, constrain the type of move the player can choose.)
The two actions can be performed in either order.
Neither action is mandatory.
The face marked sacrifice does not provide any action when rolled, but a player cannot perform a sacrifice move unless a sacrifice was rolled.
When performing a sacrifice, the player sacrifices one ship of the color rolled on the other die.
If both dice show sacrifices, the player gets no action that turn.
A wild may be set to any other face including sacrifice.
Catastrophes are mandatory and are resolved immediately after each action.
I played a six player last man standing game using these rules and it was a blast. It does change the character of the game significantly. The game becomes a fast paced dice game with wild random swings of fate and less of a deeply analytic space chess.