i doubt a 3.56 cfw will come out, since it has remote connection and a rootkit... sony will know every console that goes on... its too hard to hack a rootkit to randomly display from a list of things you want... the best thing would be is to make a 3.56 that runs on a parallel site for online games...
Still, "a 3.56 that runs on a parallel site for online games" will continue to be a CFW. And a 3.56 CFW is something that devs will work on I don't doubt. But on-line gaming was almost doomed from the start - that's something anyone out of the OFWs should know.
they already fix the hdd problem! if you are on 3.56 and go to system update it will tell you that a 3.56 update is available, is like a v2 of the 3.56!