I think some of the older swimmers -- Coughlin, Grevers, Lochte, etc -- aren't rested enuf. It's probably a scary thing to rest as much as they should. Sort of uncharted coaching territory with the advent of the older pro swimmers.
In some cases it seems like a few or the older swimmers and their coaches figured out what was really possible and went after it, accounting for age, recovery, competition. In other cases it seems like they did not figure it out. We hear/talk about a team being out coached in other sports and maybe we're seeing that in swimming too.
I almost bought tix to Omaha when they first went on sale and had them up on my computer, but paused and decided I would wait to see if trials in 2020 might be at a more interesting location or at least close to something.
The swimming has been really interesting and I'm sorry I didn't go. Try to sneak into the OT pool or something - that might liven things up.