the entity using the satoshi pseudonym is one person. that is established.
however satoshis idea's are a patchwork of many older concepts that alone would not work but satoshi was the brainchild of patching it all together into something that works. plus adding his own customisations and extra tweaks to it. which made it special and unique
also satoshi, worked with other people. that is established. but only the single entity used the satoshi pseudonym. all the rest helping out used their own pseudonyms.
Better to hide his identity to be more mysterious. I don't think if he's identity is important to know who or what he is. The most important are the things that he made today and will make in the future to get to know more about the bitcoin.
If his identity has got revealed sometimes our system might have functioned as a bureaucratic one. Right now it's good to have a great growth and made things move forward in the right track. The innovation is truly a appreciable one that people have got an ease in all sort of needs.