I also replied to you at that other forum but I will repeat it again here to save someone else asking ;)
Controls : Can't be changed via the menu i am afraid. Someone would need to write a psp specific input handler for it.
Savegame name : Someone could add an osk to wolf to change the name, i just didn't think it justified the time taken to do so. Are you really going to have more than one save per game? I don't think so at least.
Difficulty : Yeah that's a weird random bug that i only discovered after releasing. It only happens randomly. Next time you start the game it should allow you to select them as usual.
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Thanks for all the nice comments. There is a possibility of a 5.1 release. There is that bug mentioned above that i would like to fix, and maybe add those status messages that some member mentioned before. I will think about making it. Just want to wait a bit for any more bug reports before deciding.