I'm one of "those folks" with my own storyline, so I collect dolls that will fit the storyline in some way. It's a fae fantasy, so there's LOTS of wiggle room for the 'different' dolls I like. They have pretty much discontinued my core doll line (Fairyland Chicline - an odd !:5 scale) so I've 'stockpiled' dolls when they came up on the MP so I'd have bodies for future characters, and even found a very few other dolls of a similar scale that I can expand with.
Recently there's been a second style of dolls I fell in love with (The Mushroom Peddler) that don't fit the first story at all. So now I've got TWO storylines!
And, yeah, I play with my dolliehs!
1:5 scale 3D printed Fencing Foils by dhawktx1, on Flickr