I've enjoyed Diamond. Gotta love tepid water.
US is crap. But at least many properties in Europe treat you like royalty. Looking at you London, Berlin, Munich. (Thanks for all the gin.)

I'm short 4 or 5 nights so far this year. No more business travel planned.
I have Chase Explorer/Sapphire.

I can of course do manufactured travel. Being in CA is not too bad, a few days here and there. (Possibly a winter trip to San Antonio as alluded to on another thread.)
Any other suggestions apart from leaving the house?