Totally agree. There should be someway to re-code how the system recognizes users. The fact that we can't change our name kinda tells me that it's how the system differentiates every user, I see this especially between me and my brother's ID's on the same PS3 cannot share save files and such even if we copy them into each other's log in.
If they go back in and change it to something else, some back code or serial number of sorts to differentiate users then maybe changing names/ID's would be as trivial as changing your address on file or your real name on the account. idk
Usually when we can't change something like this ANYWHERE online, it means its something important as to how the system keeps track of us.
SONY, look at all the kudos and signings. LISTEN TO THE CONSUMER!! WE give you your money. We expect to have convienence and enjoyment. No offense, but it has been TOO LONG. WAY TOO LONG.