Well not for 5e specifically. Also, I was not a player, but the DM. I limited everyone to human. I also had restrictions on the classes in the campaign and several classes and/or class variants were limited to specific cultures.
At first, a couple of players were slightly hesitant, but all were willing to give it a shot (the one most hesitant needed some encouragement from other players). However, once the first adventure started everyone was having fun. The players found the initial adventure tied to the stated goals of their characters. After that, the direction of the campaign was primarily player/character driven. For instance, the characters, eventually, found that a wizards guild kept finding them, because the rogue had stolen and pocketed a guild ring off a guild wizard whom they killed on the first adventure. In the escape, the party rogue stuck the ring in a pouch and forgot about it until almost a year later while rummaging through the pouch. Other examples included
- the players trying to get the stuffy Shaman "laid" in order to get the "stick out his butt" which led to him being kidnapped and taken to the court of the fey- the party went to rescue him only to find he was reluctant to leave.
- Albert, the knight returning home after a year away hunting down the people that ambushed and slaughtered his border patrol. Upon his return, he found himself charged with treason and desertion, his fiancee about to marry his best friend, and his noble house about to be taken over by that of his friend.All of this, because Albert never once contacted his liege or even his fiancee (I even double checked with the player to confirm this). While Albert was busy trying to convince his fiancee to back out of her marriage and also deal with family matters, the party was busy building a case to clear Albert's name. Eventually, the party found that the best friend was responsible for the ambush. This led to a climatic duel of honor and the party joining in to stop Albert's opponent's comrades from interfering from the sidelines.
The campaign itself lasted about five years as there were a few small breaks to allow me a chance to play while someone else DM'd. Within a session or two of someone else running (we had two other DMs), players would email or call asking when I would be ready to run again- while everyone asked, it was the one player most hesitant at the beginning, frequently, telling me that he wanted to get back to running his knight, Albert. When the campaign ended, everyone, to my surprise, agreed that it was the best campaign that they had experienced (personally, I attribute that in large part to the players themselves). Albert's player kept asking me for months after the campaign ended to start a new campaign with the characters or at the least a one-shot.