You all are missing the point. Rangers et al do not have to spend points for-
Survival: Mountaineering
Survival: Desert
Survival: Artic
Yet you are saying that Bards, whose concept revolves around performing should divide their points among a variety of perform types. A mechanic that gave you a number of styles equal to your charisma modifier is far more fair and balanced when you consider everything together. A Bard should be able to walk into town, sing, dance, play and act. That is what they DO!