This has been bothering me for some time and I haven't been alone in voicing my concern: simply put I'm worried that the PSP version of FFT will require cooperative gameplay to get some rare items.
What I haven't been able to find out is whether that's true or not. The normally helpful gamefaqs.com has little information to go on.
So I'm asking for your help. If you're playing through the PSP version and you find something that either is entirely new or something from the PSX version that you can get in a new way, please post about it.
I've taken a spreadsheet from a list of items in the PSX version and I can modify it as new info comes in. The original file has been converted into a html document and posted below.