I think there is an opportunity for content with multi character support.  PP2014 has the fitting room, which does OK for end user content conversion, but may well make it more feasible for a vendor.. especially a new vendor to build up a name with strong content offerings that can be used on v4 PLUS some of the alternatives like dawn and Genesis2.  Its definitely a good path for the customer who is trying to ween themselves off V4 but doesn't have the kind of resources to invest in an entirely new content set to jump in with one of the newer figures 

Alice is just a morph of V4 so its as easy as adding the morphed shape to support her along with v4.  I'm not sure precisely how The Girl differs from v4 as I've never had much use for the toon girl look and therefor never used her!

I'd love to see another independant figure, just because I love to see what each person or team can bring to the table in that regard, though I cannot even remotely recomend it as a good way to earn good money (unless you consider pennies per hour a kick ass wage!)