Thanks for the feedback, y'all. I'm not going to be spending money anytime soon, but tweaking/researching/thinking about a future purchase certainly passes the time.

Based on feedback, I've updated the 'initial' build. Still several overly-wide modules that I'm researching good alternatives for. I swapped the Tool-Box for an eãs. The Cold Mac looks super interesting, though it seems like there are lots of complaints around its learning curve. Most of the changes come from narrowing down my sources of randomness and I settled on Sloths over the others (but CVilization seems awesome, maybe that'll win be back).

Honorable mention: Desmodus Versio and Rangoon (Rings clone/derivative) have caught my eye.

ModularGrid Rack

Windowshopper