Since your water heater is not on the bottom floor, you would probably want to include a vacuum breaker the next installation. Water heater implosions from vacuum are rare, but impressive from what I understand. I think we would see more different pictures if it was fairly common.
I have the feeling that big sudden leaks are pretty rare. I have very limited experience. Pipes seem more likely to be the source of sudden big leaks.
I would put a water sensor, such as Glentronics, Inc. BWD-HWA in my drain pan. I would keep my homeowners insurance up to date and check that it covers the results of sudden plumbing failures.
I would be more worried about the chance of a sewer backup in your refinished basement.
I have the feeling that big sudden leaks are pretty rare. I have very limited experience. Pipes seem more likely to be the source of sudden big leaks.
I would put a water sensor, such as Glentronics, Inc. BWD-HWA in my drain pan. I would keep my homeowners insurance up to date and check that it covers the results of sudden plumbing failures.
I would be more worried about the chance of a sewer backup in your refinished basement.