Re: 'Boos' make a Heel?
Well, when it comes to the crowd's reaction to face characters, it's pretty simple. Crowds cheer the ones who they find entertaining and boo the ones they don't (or they just stand silent, it depends on how much they hate the guy and if it is a dead crowd or not). Pretty much if you are a face and are not getting cheers then something's wrong. If it happens on the scale that we are seeing with Reigns then there's PLENTY wrong.
If you are a heel, things are more complex. Generally, guys who simply do a bad job as heel characters simply get no reactions. But the ones who do a good job can get one of two reactions: Some excel at their heel roles and are booed no matter how good they are at what they do (ex: Vickie, Miz, 2008 Jericho) and then there are those who despite having heel characters manage to entertain the fans, and therefore get cheered (ex: Owens, Sasha, Heyman).
What I want to say with this is: While I think that if a face is getting booed they should pull the plug and turn him heel, that logic doesn't always work with heels. You can be a good heel and be cheered, but you can't be a good face and be booed. The notion that heels always have to get booed is outdated imo, because nowadays wrestling just doesn't work that way, both in and out of the WWE.