SWG crafting had some really cool aspects to it, but in general it wasn't spectacular for one simple reason: the leveling process for crafting was absolutely horrible.
When I first started playing, I tried out Droid Engineer. Economically mastering that profession required making several THOUSAND worthless droid parts. The same part.. non stop. Manually clicking through UI windows several THOUSAND times, always selecting the exact same buttons. It was utterly mind numbing and soul destroying.
Imagine my reaction, after mastering Droid Engineer, when I discovered that it was an almost completely worthless profession.
To this day, I still regard that process as the absolute worst grind I have ever encountered in an mmo. Not the longest grind, but still the worst.