The hard part here is the nature of the craft. Developers have rules. Code has syntax. Everyone follows the same rules and code comes out the same. One develop

The hard part here is the nature of the craft. Developers have rules. Code has syntax. Everyone follows the same rules and code comes out the same. One developer can pick up where another left off. It's very clean cut. Designers are different. There are "rules" of design, but each designer is different and have their own styles. That's not a bad thing, but when you get multiple (hundreds, even) of different developers with styles and no "strict" rules of design, it can make for a very hodge-podge project that...well...looks like 100 different people designed it [Not a designer or developer but I work with both and serve as a "translator" between the two]