Sometimes a thread doesn't generate the expected response does it?.
I have to agree being taught formation flying is a very good idea, a potential life saver, and will improve the skill level. It is, however, possible to develop the skill slowly over time providing you look, listen, and learn from people who know what they are doing. Just as it is possible to self teach aeros. To do it this way takes a certain type of self critical person though and an external set of eyes can see the mistakes quicker.
I was assisted by an ex RAF guy and now practice every weekend with people I know and trust as the lead. Over the past year or so of doing air to air pics we have had people claiming to be experienced at formation flying who fly 'same way, same day' about a mile from the camera ship and people who choose to continue closing without any idea how they are going to complete the formation entry to a safe position. Needless to say we now request that I go as formation pilot (which speeds up the sortie because I and the photographer work as a team) or I pilot the camera ship and have plenty of exit routes worked out.
Its not a game but can be immensely satisfying.
Try it but only when you really understand what you are doing or have someone with you who can teach the skills.