What about
Chabot for Ekblad
Virtually the same cap hit, each team gets a player who compliments their group better.
Chabot - smooth skating PMD, goes well with Florida's offensive style. Forsling/Montour/Chabot/Gudas (or whatever RD they replace Gudas with, Severson, Mayfield, etc) should be more dynamic
Ekblad is slower but as a big shot RD he should fit like a glove with Sanderson. Sanderson-Ekblad/Chychrun-Zub is a very well rounded top 4.
Chabot is a year younger and signed for much longer but at 8 million a year that might be cap space Ottawa would prefer to have in 2 years after Ekblad's contract runs out.
Contingent on Ekblad waiving his NMC of course