About the only downsizing I do is giving a knife to one of my sons from time to time. They're in their 40's now, so I know the knives that I no longer use will be taken care of.
As for seeking any new knives, I have no specific needs, but I'm a sucker for well made Barlows & stockman's, & I suspect I'll run across a few in the coming year that I can't live without.