Starship Troopers 3: Marauder could afford to bring back the original star, but that was due less to an increase of budget and more to significant depreciation in Casper Van Diem. This movie is what the Ghost of Casper Van Diem Future would show to make him change his ways.
"YOU WANT TO HAVE SELF-RESPECT FOREVER!?"
He returns to find that the solution to the bug problem is religion. Not a freaky bug cult, nor Matrix-style rave religion, but actual swear-to-God swearing-to-Roman-Catholic-God.
"Maybe I should just ask the bugs to stop. No! Maybe I should ask someone invisible to stop them for me!"
Jolene Blalock throws away her assault rifle and falls to her knees to shout out the "Our Father" in the heart of the alien base, blowing it up and realizing why most ex-Star Trek actors settle for taking signature money at conventions.
The exact moment she realized she'd rather wear fake ears for a sweaty queue of signatures for the rest of her life.