Warmer ocean temperatures should generate more and stronger hurricanes, but we don't know how many more and how much stronger, obviously. It could be the impact is say a tenth of a hurricane a year, which would not be noticeable. Slower moving hurricanes will drop more rain over a set area and cause problems of that ilk.
Global climate is enormously complex and my "basic take" is that it is far too complex to model with much certainty. And I think there is some chance that climate change turns out to be worse than the models project, as well as better. I also think we're going to run the experiment and find out. Thus far, the hard evidence for a warming climate is perhaps not as strong as one might think and could be viewed as natural variability. I don't think that is the case.
But, it is difficult to have much confidence in the models. And I hope they are wrong.