Dear Self: You've been gaming with largely the same group for 7+ years. Why do you keep expecting them to wake up one morning and adopt your own roleplaying preferences? The powergamer is always going to be the powergamer, the special snowflake player is still going to be the special snowflake player. Stop trying to force the group to conform to your wishes and just enjoy the process you have with people who are your very good friends!
That said . . . .
Dear Special Snowflake Player: Stop. Just . . . stop. We get it, you can't possibly be expected to keep the fun of the group in mind when creating your character. You're just not emotionally equipped to handle being "just another big awesome hero." It's not enough to have the chance to play a unique individual in a dramatic, fictional world with an interesting backstory.
Oh no, you have to REALLY be SPEEEECIAL.
You have to have a unique cloak that makes you look EVEN MORE AWESOME than anyone else with a cloak. You have to have a magic weapon that doesn't just make you better at stabbing, you have to be better at stabbing AND your sword has to have a mysterious skull on the pommel that has glowing eyes. Oh, and of course, the glowing pommel eyes should definitely give you an automatic +4 to all intimidate rolls, because AWESOME, RIGHT??? You couldn't possibly just be expected to be a regular 'ole elf. Oh no, you have to be an elf from the Mysterious Eastern Mystic Elflands, with unknown ninja powers.
Apologies, special snowflake player, it's not our fault you were never allowed to feel special enough as a kid. But do you have to make up for lost time now by torturing our gaming group?