1. The books eventually going up their own ass. Legacy of the Force and Fate of the Jedi were the worst offenders.

2. Super-weapons of the week. Kevin J Anderson used this trope way too much. The Sun Crusher? Darksaber?

3. Every book having "the biggest threat since Palpatine." It got old after the second time they used it. Not every adventure had to be a galaxy-changing deal.

4. Killing off Chewbacca for shock value. Thats like getting the kids a puppy for X-mas and then shooting it.

5. No gay people at all.