1) BUY guns!
2) Mission Goals, rather than just killing everything you see.
3) More storyline.
Story Suggestion: Suddenly (Insert Name Here) wakes up on a hospital bed. In his cell. Greeeat. SystemCorp was researching methods of bringing corpses back to life, which was probably how (Insert Name Here) survived the gassing at the end of Thing-Thing 4. Perhaps 155 makes a comeback?