So, the PSP store shuts down on July 2nd, and Sony never made it clear what that really meant, but regardless I've spent all this time going through and checking all our PSP stuff, and have made sure that anything missing is there to the best of my ability. All PSP DLC should be accounted for now, barring any videos, so if for example, all PSP games and DLC were to disappear overnight we would already have the information. Now we need to do this for PS3 and Vita since they are the next oldest.
Looks like Sony has outright reversed course. PSP titles are still indefinitely available for purchase -- just through PS3 or Vita. Still, it's good that things were archived now rather than later.
I'm bumping this because Persona 4 Arena Ultimax just came out for some more stuff and it seems we never even had a placeholder link for the game's DLC on PS3/360 and for some reason it wasn't in my initial list either. Anyone care to rectify that?