I’m more than a little surprised that the Long Putter will be illegal soon. I have played for a long time and seems like the only other ban I have seen was when the USGA came down against Sam Sneed and the crochet style putting.
Here is my list of ten changes I have seen in 50+ years of playing golf that might have been banned but were not.
1. Metal heads for woods
2. Metal shafts
3. Graphite shafts
4. Oversized heads for drivers
5. Cavity back clubs
6. Cut proof balls
7. Cavity back (open back) putters
8. Giant weird looking putter heads
9. Hybrid irons
10. Lob wedges
11. Dozens of design changes to golf balls (this one should be 10 ¼ )