Progress and development takes away “island charm”.

The island is still #1 destination in this hemisphere IMHO.
St John USVI would be #2.
SXM has a long way to go to fall into Jamaica territory.

Crime is my only worry.

I don’t know if I have ever seen a local police person on the French side. Just French Gendarmes usually standing next to a car or in a truck.
On the Dutch side, Ive seen them around the bridge responding to a wreck.

maybe they are great and stay out of sight. Or maybe they need a few more and stay on constant visible patrol.

Come to think of it, has anybody seen a French side Gendarme sobriety checkpoint lately?