CV conditioning = offset, scaling, inverting, mixing of control voltages
Yes Frames is a bunch of VCAs and a mixer of sorts, but not all at the same time. Plus, Frames's special feature is switching between different settings of its 4 channels under CV control up to audio rates. Putting it to work as a bunch of bread & butter VCAs or a cheap dedicated mixer seems like a waste.
Get a dedicated multiple VCA and a 4 ch audio mixer. 2xVCX and Doepfer A-138b come to mind but are just examples (use the module browser). As a general rule I recommend cutting your teeth on a bunch of simple second hand modules and upgrade to more expensive gear when you really are able to make use of its specific features. Makes sense?