Personally, I'd be happy if Jim didn't bother with convention appearances at all from now on. The short story side has been fairly productive & I suspect the later release of Cold Days, has more to do with Ghost Story getting released rather late into the year. (Compared to what was planned.)
If Jim needs self fulfillment, the Internet can provide a better experience than most conventions, since you don't need to dress in clean clothing, you have more time to consider your responses & you can take a bite into a sammie, between posts.
(Or worry about the lack of deodorant smell.)
Plus, airports can get stressful, especially when there are issues.
I know fans like a meet & greet, but I think Jim has well earned the right to cut back on this sort of thing.