Singular paralysis hardly ever feels worth an Esuna because it doesn't usually last long enough to prevent more than one action anyway, given its RNG. It's also disproportionately more detrimental to casters than anyone else, so depending on the party composition it's possible nobody loses any GCDs even if the paralysis triggers.
Echo drops are a good idea for anyone with Spells to carry even outside of deep dungeons, as Silence could last long enough to block as many as three GCDs.