I think that Q4 is the time to powerdown, it's all about risk management. On the one hand if the price of Hive takes off 6+ months from now (that is my belief) you miss on curation and staking rewards. On the other hand if you think that the price of Hive has already peaked and is on the way down the sensible thing to do is to unstake.
In my opinion the bull market still has 6 to 9 months before it turns south. Hive in particular could do a 5x or even a 10x (or more) from this point. I just don't see it going down until the bull market is over.