Wowzer Lugia.
That was brilliant. I like different packages for the reason that they can be used together or stand alone in portable setting like if I had just the Buchla Skylab that can be my workstation at a club DJ type event. But yeah the wall of power as you discuss would be impressive indeed! I have a buddy with a wall similar to that but not quite as big. I was in awe when he showed me his setup.
BUT my budget is much smaller and realistic so I am happy to play in the small end of the fish pond before diving deep into Eurorack. Even if I won the 100 million dollar lotto tomorrow, I would probably never spend 50k at a pop on new gear. Probably get one system and master it then see about options. My experience being new to all this taught me to squeeze out drops from one module- the 0-coast which is amazing for that itself. I can only image what 10 modules would do for me!