There are 2 points I am thinking about:

I saw Lugia talking about the TipTop Audio - Fold Processor, and because I have no serieus filters at the moment in the rack, maybe this is a good opportunity to shape my first voice from the RackBrute.
The second voice I regelary use to sync the STO.

""Another thing is I am thinking about is to put a 2nd dynamix in the mix and use it to 'shape' the stream to the sync (of the STO) to 2 different syles after each other. But maybe there is another module doing something like that ?""
--Need to rethink this point--

But then still I would like to go further on the melodic part ..
Any suggestions ? Or feedback about my plans , or about my current rack?

Till now, my idea is the following rack, (the second row are the modules I want to buy in addition to the existing first row, Make Noise - Maths / TipTop - Fold processor / Make Noise - Dynamix (a second one) / Mutable Instruments - Kinks ):

https://cdn.modulargrid.net/img/racks/modulargrid_900153.jpg
(I also forgot the Doepfer Sequential Switch wich is in the front row because I also ordered it, so I think I also will look to the switched multiple. but both are not visible, I can not refresh the screenshot.)

and for the longer run the next rack I have in mind :
(3th row are the new modules for this version)

https://cdn.modulargrid.net/img/racks/modulargrid_900194.jpg