I doubt France will be able to sell SSN easily.
But that said, a 4000 ton Barracuda Shortfin / Ocean SMX looks enticing! I also love the design concept of French SSNs that they combine elements of Diesel Electric subs with that of a nuclear sub. Basically, the recent french SSN is a underwater nuclear electric power-plant while propulsion is purely electric. They even have batteries to switch in an extra stealth mode in which no noise is generated. Makes export of the design also possible by just removing the nuke reactor and replacing it with diesel generators.
The idea of using lower enrichment fuel is also great. Reduces risk and saves precious weapons grade nuclear fuel for making weapons. Only thing is, you need a nuclear industry to keep your subs fueled every 10 year. Not a bad option.
May be, it might be able to export it or lease it to India...
Or help india in miniaturizing an electricty generating nuclear reactor to drive a 4000-4500 ton submerged sub. That way France can provide subs and India can integrate integrate nuclear power plant as a massive module.
If IN can opt for it for its P-75(I) it will be great!