Watch carefully... this may be the only useful post I ever make here. :D
1. Phase Cancellation. 2. Room.
1. If stacking voices made for bigger sound, all synths would have 20 oscillators. Wanna know what it sounds like when you stack 20 oscillators all playing the same pitch? A home organ. That's why a B3's tonewheels are all independent: they're like a string section---they sound mostly the same, but not 100%... and their attacks and releases are always different. Put 2 mics on a huge drum and if you're not careful... again... thin sound. Also, mixing C/S and O/S is like mariachi: ever notice how wimpy trumpet and violin sound unisono? Another facet of phase cancellation... two fat sounds on their own, but their harmonics clash and thus cancel each other out. (It's also the reason we can pick out a solo violin passage in front of a section of violins... our ears are wired to sense the phase cancellation of one guy among many---has to do with how we perceive 'directionality')
...oh yeah... studio guys have tried since forever to have 3 or 4 fiddles, singers, whatever, overdub and create large 'sections'. Never works. All you end up with is something analogous to Bohemian Rhapsody. Or that 10-CC song.For rich tone, the ear demands something that only a certain number of different guys (or tonewheels) all at the same place... at the same time... can provide.
2. In the immortal words of legendary producer Bruce Dickinson, "you gotta explore the space." Want a bigger sound? Do like the monks... find a better room. I'm always surprised at how big a pit orchestra (< 25 strings) can sound in the right room. Now that they made it like a regular plug in, my next VSL purchase is definitely MIR for that very reason. (I am just gobsmacked at how much it adds--- especially to C/S)
Maybe you know all this in which case... as Emily Lytella might say...
Never mind. :D
PS: @William... thanks for the film suggestions. Very cool!