The missing part is "make it workable". By that I mean reasonably easy to modify. This may or may not involve simplicity but usually involves modularity and lac

The missing part is "make it workable". By that I mean reasonably easy to modify. This may or may not involve simplicity but usually involves modularity and lack of hard impingement interdependencies - weak coupling. If you skip that, you will relatively quickly reach the point of a full rewrite.