In my opinion the top ten amusement park failures are:
1. Son of Beast at Kings Island
2. Shoot the Rapids at Cedar Point
3. The Bat at Kings Island
4. Windjammer at Knotts Berry Farm
5. Original GIB (SFMM, SFGAm, SFOG, & Parque de Warner Madrid)
6. Original X at SFMM
7. Orphan Rocker
8. Vertigo at Walibi Belgium
9. Ring Racer
10. Gwazi at BGT
Surprised no one mentioned Wind Jammer at Knotts Berry Farm yet. IDK what was going through thier minds when they thought "oh let's take out a unique family coaster for a piece of Japanese crap" boy did that backfire...
In my opinion , it depends on the coaster. On Modern coasters it doesn't really matter what the restraint is (execpt for OTSR ) as the all will clamp down on you during the ride so adding seat belts doesn't really hurt any value in the coaster. However if you put seat belts on a old coaster (like the Phoenix at Knoebles) it can end up ruining the ride (no more of that "I'm going to fly out" airtime).