I certainly don’t hate it :-)

Correlating musical notes to progression in a fractal as you draw it is very interesting, and I think it works! For the sake of a trailer, I’d add some background noise/music…maybe? Because you’re using a musical scale, you might be able to make your actual demonstration be musical enough to not need anything further; however, in the trailer there is a lot of dead air.

One note I will make, though, is that it could be louder and the recording could be a little crisper. Games like Proteus and Fract OSC pay more mind to their sound design because it’s a main feedback mechanism.

This looks very intriguing. If it were me, I would explore the dynamic between the fractal and the noise each iteration makes.