How there can even be a question about the desirability (even the necessity) of a second French SL team after a World Cup in which France was hammered by Samoa's team of heritage players is just bizarre. The plain facts are:
* RL needs a strong international game to boost its' profile and commercial income.
* The international game needs France (and Wales too) to be a lot stronger than now and that plainly needs France to have more full-time pros to pick their team from.
* Between the language barrier and the cultural differences, if a young French player has to choose between moving to the north of England or staying in France and switching to RU I suspect the choice is a no-brainer: most will stay in France and switch.
Consequently, for RL to have a stronger, higher-profile international game a second French SL team is a necessity for the sport. If that's only viable with franchising/licensing, then franchising/licensing is also a necessity for the sport.