So, I need to be able to get instruments working with only a semitone (+/-) pitch bend range to work with my microtonal keyboard from H-Pi. Pianoteq is the only option I've got fully working.
To be fully compatible I need two features:
1. adjustable PB range
2. multi-channel input where each channel doesn't affect the others (including pitch-bend affecting only each channel)
If I have at least #1, then some combination of patchbay controls and multiple instantiations will always work. But it's nicest when, like Pianoteq, the whole instrument works in one instantiation while still taking pitch-bend info on a per-channel basis. Pianoteq still adjusts the other sound qualities across channels, allowing a consistent sound otherwise. There's one plugin for Mac called Automat that is free and does this as well. And on my Mac, the basic GM soundset works this way.
So, QSynth at least can load up multiple channels and they can be set to the same sound and saved as a preset... so all I need is to be able to set the PB to +/- 1.
And anyway, if anyone has advice about other instruments that might work for this, I'd appreciate it.