...which is the reason why I first discuss it, then change it.  An edit war is nothing pretty, you  know?  We'll see.  Anyway, what you write is largely true, but misleading. Especially:

- Free oxygen, free fluorine and moisture surely will corrode the metallic walls.  However, the chemical potential of the salt has to be controlled anyway so it is slightly on the reducing side, containing some trivalent uranium.  So any free oxygen or fluorine will oxydize the uranium ions, not the metal structure.  Moisture will be driven out with the off-gas at working temperatures.  All this is pretty much a non-issue.

- Cryolithe.  Yes, aluminium is produced by electrolysing alumina with cryolithe.  This can be considered a mixture or solution of sodium flouride, aluminium fluoride and aluminum oxide, certainly a molten salt.  But the cryolithe is really only a fluxing agent, it is chemically non-agressive and it doesn't extract aluminium or something.  You hinted that it does, which  is really misleading.

- Heating is not a technological issue.  Sure, it adds to the cost, but other than that there's no problem.  A power reactor would run quite some time without ever being cooled down, refuelling is done by adding some molten or even solid salt, without shutdown, cooling or heating.  

- But tritium is a problem.  To slow down tritium formation, the lithium in the salt has to be almost pure Li-7, and even then tritium will form.  Tritium in the salt is no problem, it doesn't attack metals.  Tritium migrating from the salt is a problem.  ORNL says, they were able to chemically trap the tritium in the secondary cooling loop.  A problem, yes, but nothing major.

And of course there are the political issues.  An MSR doesn't fit into the "razor-blade" business model currently employed, research is still needed, and that is expensive, waste reprocessing is currently illegal (though this is stupid when also applied to pyroprocessing), and uranium is too cheap these days to make a breeder economically viable.

(Yes, if we can find some agreement, I'll summarize this and move it to the article proper.)