[slowmovintarget]

Lots-of-little-ones (LOLO? LOLO) is the right answer in a number of cases. One big god service? No; microservices (lots-of-little-ones). Large many-lined functions with copious branching and conditionals? No, LOLO. Big teams with multi-hour status meetings? No... LOLO. One big integration at the end of the project? No...

That dependency diagram for Servo actually looked relatively clean. You can clearly see which elements are library or utility code. The visualization would probably be better as a three-dimensional model with weighting.

For OO practice, state of the art is SOLID (with a sprinkling of RAII if you happen to be using C++). SOLID leads you straight down the path of LOLO. Small increments FTW.