Actually I wouldn't say it's sensible per se to de usable golden legendaries. The chance to pull one is so astronomically low that it's near impossible to pull the same one twice, and I guarantee you'll regret it somewhere down the line. Of course it depends on how much you're still missing, I'm at the stage where I'd even keep a golden Gruul but if you don't have Boom, Sylvanas and the like yet then I'd prioritize those after all.
I could justify disenchanting it to make Antonidas or Grom but I have almost every single other usable legendary except for Harrison Jones, which seems to be the least useful whenever I have almost 1600 dust and the most useful the day after I craft something else.
I can't justify disenchanting it with the other shit I should disenchant that I keep around for fun instead.