I wouldn't mind these two dungeons getting a large-scale remake on a major patch even if it has to delay something else to a later patch. If they were redone at max effort it essentially becomes the fun new content of the patch for everybody old and new.

The new versions could have different enemy patterns, a more direct route to the end, better boss mechanics, gear/minion rewards, shorter versions of the old cutscenes and many of them removed entirely like the ones for searchlights.

Could add many teleporter devices along the way like in alliance raids which activate when somebody passes one, so anyone left behind has quick access in their locality to jumping to the rest of the party.

They could really go to town on the remake. Nero fight uses a Duty Action jammer (given by Cid) to make the magitek claw turn on him and stun him. Use it to interrupt his big charge attack which would otherwise knockback all party into the electric field and do moderate damage.