Nah, it’s just impossible
It’s easy to do that on the Streichfett because “string”, “brass”, “voice” are just variations of the settings of the same sound engine (various responses of a filter bank, and various mixing amounts of different waveforms/harmonics). It’s pretty much like morphing between different presets.
But you can’t do the same thing on Braids because each entry in the list is a different synthesis model sharing no parameter with its neighbours, so the only way of going smoothly from one to the other is through a crossfade. And crossfading between models sounds very uninteresting -
in particular you have annoying harmonic cancellation effects.