I agree with you on the pirate front. Tbh, I couldn't care less if the greedy multinational shipping companies lose some profit, as long as it prevents the coast of Somalia from being taken advantage off. With regards to the kind of government, I think a federal system would be essential; in order to give regions like Somaliland/Puntland autonomy, without them getting independence. A democracy is a given, communism existed under Barre - but in the end, with communism, it will somehow turn into a dictatorship and things will go from bad to worse.
I don't think nuclear reactors will benefit Somalia. If something goes wrong (and after all it is Somalia) then it may well be it for the Somali race. Lol. Anyhow, doesn't Somalia have a lot of petroleum, natural gas etc.
I think if this Al Shabab menace ceases to exist in Somalia, then the country can do very well economically..their is a very large diaspora willing to invest in Somalia, if security permits it.