Quote - Even after years V4stuff is driving every other figure out of the market.

You check out the store thinking "what can I get for nice stuff for Roxie , anastasia Miki4, Rex or Ryan?" , and all you get is Victoria 4 stuff with morphs ++ required.

I'm just not good in dealing with mainstream ;)

If you aren't using V4, then you have to use the entire Poser ecosystem.  There are a lot of tools available, IF you choose to use them.  Most people choose not to, and are really missing out.

Hair - Netherworks Hair Control System will easily move that Gen4 hair to other figures.

Clothing - Fitting Room (if you have 2014), Xdresser/WW if you don't.  If you are using Dawn, Lyrra's Fitting Room magnets for Dawn are "must have's"  I have a lot of V4 clothing content that has never been on V4 - but it has been on Sydney, Jessi, Miki, Mariko, Anastasia, etc.

Textures - Texture Transformer/Texture Converter 1 & 2.

Shoes are the final frontier......i.e. I am not very good with PhilC's Shoe Last.