Taylor and UPN were the ones who wanted no internal conflict, Piller was all for it and I'm assuming Braga was too seeing how he had Janeway act to the crew in "Year of Hell". Once Piller was gone Taylor pretty much did away with anything he left behind she didn't like and once she wasgone Braga's attempts were all overriden in favor of sex (Seven) and Borg-of-the-week adventures.