Akoustecx
Electro Acoustic Excursions.
I suspect this is wishful thinking, as Pigments seems to have planted its flag at the intersection of power and intuitive to many.I'm finding I like what some of the presets do with the Harmonic (additive synthesis) engine... but apparently you can only have two of the non-utility engines active at once, so for example no simultaneous wavetable + harmonic + granular. Now that they've added multicore support for better cpu performance IDK why they don't allow for more simultaneous engines. I like being able to use six different engines of any type simultaneously in Equator2---but it doesn't have an additive synthesis engine. (OTOH Synthmaster 3 does and I'll probably be upgrading to that soon from Synthmaster 2.)
Opening Pigments up like Phase Plant might be even better but I'd guess it would require a lot more coding to redo the architecture.
Having said that, it's an easy hack now, as you could set up 3 on one channel, bus them and then sidchain the bus into a 4th for a global fx finishing touch.