(Axoloti) Bandpassfilter in the feedback of an FM Operator

Woke up this morning over an idea. How would it be to insert a bandpassfilter into the feedback of an FM Operator (here the Modulator)? So I tried on an Axoloti board. Two Modulators each with its own Bandpass Filter each running through a VCA-ADSR block go into a mixer and from there into the Carrier. One has a zero Attack and ultrashort Decay, while the other one comes with a bit of Attack and slightly more Decay. Parameters can be controlled via Midi CCs on the Octatrack. First result sounds promising for more. On the video you can also here a bit of Percussion from the NordDrum and a rythmic Dronesound from a Single Cycle Waveform