4 Hyatt nights in a top category like the Park Hyatt Tokyo or Sydney will get you about $2200-$2400 in "value" vs paying ~$600 a night.
Pre-devaluation you would have gotten 5 nights. :-(

Dunno where you live, but 120k British Airways Avios can be VERY lucrative if used correctly. 40k United miles will get you to/from Australia (one-way) from the west coast (albeit in economy).

Investigate the other UR airline transfer partners and do some more researching on their lucrative redemptions. This is how you get outsized value. Somewhere I found a good strategy for Korean air.