I have Python, but actually the Softube sounds and works like a real type of feedback, but I think it's pretty limited for a Guitarist.
That's why I use it on samples of Guitars and synths.
I am looking for the bomb feedback from guys like this.
Vincebus Eruptum.JPG
The Who heard these guys in Oakland, CA. back in the day and re did Summertime Blues.
These guys live actually gave many future Guitarists like Nugent, Van Halen, Zappa and even Hendrix ideas for such insane feedback.
To be able to morph or modulate from the root to the 5th and vise versa would be the ticket I would think.
I am currently working with wavetables and QWave trying to combine things.
Most recently a combination of the Softube plug as I can control it's one basic tone, and then use an expression pedal w/ CC2 to bleed in the other desired freq's. With CC2 I can have the 2 sliders w/ opposite curves so the root can morph to the 5th by putting the expression pedal at Max, drawing it back would have the opposite results.
At the end of the day there's nothing better than a maxxed channel Twin or 50 watt Marshall stack. But if I can live with fake Rhodes pans live, I could enjoy a psuedo feedback.