I don't see the reason to move Pulock either unless it's for a top line winger, but a top end offensive LHD wouldn't be bad either. Reilly has been a nice secondary offensive threat, but Dobson accounts for like 90% of the blue line offense. The Barzal and Horvat combo is looking good, but Dobson as the third makes it an excellent trio like in OT.
If the Isles had another Dobson skillset type of d-man (preferably LHD) then that player could really support and ignite the 2nd line where Engvall-Nelson-Palmieri have shown nice chemistry and is productive. Hanafin would be a pretty glorious fit, no? Trading Pulock in that deal would really change the dynamic of the defense, but a reconfiguration like that may be a better fit for this suddenly big and fast team - Engvall, Holmstrom, and Gauthier have upped the speed quite a bit. Just saying. A top end forward would be really nice though, but losing Pulock for one opens up a pretty big hole. Dobson can only do so much and asking him to carry around Mayfield and Bortuzzo/replacement is a lot.