Hi Zerandib
for the activation, i think this is for you
http://scn.sap.com/thread/1630642
reason why not all switches are on, i believe because the systems would become massive and more complicate to manage even for people that don't need all solutions
I would still recommend you to create a custom index for this purpose without activating the std one
Last but not least, in case your VBFA is a cluster give a look to note 1363942
Regards
a