You are right- there are no good irrational players to go after at this point unless in a trade.The Dodgers GM said if you're rational about every free agent, you'll finish 3rd all the time. The Mets could use one irrational move to get them to the elite, elite level. Right now, there's not a good player left on the free agent market to be irrational.
I would say that Springer may have been the best irrational move they could have made. I don't want to be irrational on a Catcher as none of them are Piazza. And Bauer- we tried but so glad that was not the one as that may have f-ed us with deGrom down the road.
At this point- let's go all out and do what needs to be done, even if over paying to sign Lindor/Conforto now.