[rust]

Originally Posted by Aramone

Would Serenity RPG be easy to convert to BRP.

Serenity uses the Cortex System. Here a short descrition from Book Rags:

The Cortex System
The Cortex System is based on the Sovereign Stone System. The system described here is as it appears in the Serenity book. Margaret Weis Productions, Ltd has stated they plan to release a refined and expanded version with their Battlestar Galactica game. The dice used in the system are d2, d4, d6, d8,d10, d12.
The system uses a variation of the dice pools system used by many different role-playing games. The primary variation arises from the use of different types of dice rather than increasing or decreasing the quantity of dice. The system has the potential to roll more than two dice, however, rolling more than six is incredibly unlikely. The primary mechanic of the game rolling a die based on one of your "Attributes" and one of your "Skills" and then adding the total. Complications or Bonuses are reflected by "steps" which change the die type involved by one for each step. (e.g. A d10 with a 2 step penalty becomes a d6.) The game uses a system of Disadvantages and Advantages to provide flavor to characters, as well as giving them various bonuses and penalties for dice rolls. This borrows from the Merit and Flaw system used by many role playing games including White Wolf in its World of Darkness line prior to its conversion to the Storytelling System, or in Steve Jackson Games Gurps system of Advantages and Disadvantages, Hero System, or Pinnacle Game's Savage Worlds game, which the Serenity system greatly resembles. To increase the survivability of characters in the game as well as give players some impact on the game, the Cortex System uses plot points. These serve to allow the players to gain an extra die to roll or modify an existing roll. They can also be spent to try to influence the course of the story if the Game Master allows. These points are also used as a source of additional "Advancement Points" which are the same as experience points in other games.

I would find it difficult to "translate" such a system into BRP.