Thank you VERY much Jim,
I appreciate you taking the time detailing your answer to my questions.
Indeed home (studio) usage as no dates for live as of yet.
The Doepfer case I have (https://www.thomann.de/es/doepfer_a_100p9_case_psu3.htm) is not that bad: 2000mA +12V / 1200mA -12V / 4000mA +5V. It is the PSU3 version, not the old one.
I was going to go for a Case From Lake 12U 104hp but changing the power source in it (Meanwell if I am correct) to a Doepfer one was going to cost me a lot of cash. I might just go for another Doepfer 6U 84 hp (https://www.thomann.de/es/doepfer_a_100pb_psu3.htm).
I have some hungry modules (4ms Listen4 is 200mA +12V, Sarajewo is 180mA +12V), I am getting to the point where I will have to spare power consumption. I might swap Sarajewo for Chronoblob2 and Listen4 for the Supamix from Eowave.
Regarding utilities and your statement "it's possible you don't know what they are yet..."
You are absolutely correct on this one: I am looking at sequential switches, switches, logic etc...
It does make sense as I am well served with OSCs and modulation but your signature just stroke me (sound sources < sound modifiers < modulation sources < utilities :) Some of these utilities I understand and can see the need for them. Others remain a mistery but surely time will tell...
I will most likely PM you (if that is ok by you) and ask some questions regarding others.
Sorry for asking the stupid question about matrix mixers as I went and had a look on YT which clearly explained it :)
The Doepfer one looks pretty good to me. If you have any suggestions, I will gladly read your post.
Thank you for your time, much appreciated.
Best,
Olivier