When working with a particular group of workspaces through many years, you learn some horrible stuff you have done in the past that you would never do in the future. I'll fast-forward your workspaces to the future - so you don't have to make the same mistakes. Some examples are replacing Readers with FeatureReaders. Replace Writers with FeatureWriters in Parallell, move stuff to database, read files - not data, pre-process data in a good way, take advantage of external tools.
FME International User Conference 2017