Thank you Pmwmartens and wishbonebrewery for your ideas and suggestions, really helpful. I know that it will be difficult to stop when I complete 84hp, but even if I start a new case separately, I would always like to have this setup as a complete, flexible and self-sufficient piece in many cases, embedded in my desktop. This is why I would like to make good choices with the modules that occupy this rack.
It is true that I have many options for trigger, gate and modulation. I could always use one of the 3 Disting like Envelope-VCA for example, but maybe it would be smart to save room for a quad vca maybe?
I think if I have to replace something I would remove Marbles. I already have it and I really love playing with it, but I think the combination of Palms with uO_C could be more precise, flexible and usable in my case, although I have never tried them. What do you think?
Any piece of advice will be super appreciated.