Parmandur
Book-Friend, he/him
Nothing about the Inner Planes is "practical" per se.What is the practical difference between them being regions planes between the main elemental planes and them being their own planes between the elemental planes?

For my money, that they brought back the language of "para-elemental planes" is just an interesting indication of shifts in the politics of how WotC handled older editions material this go around: a lot less walking om eggshells, more inclusive of a wider expression of D&D history (including 4E-isms, like in the Feywild and Shadowfell), from the cartoon and the action figures right on down the line. A more confident presentation of the history of the game, less trying to appease opposing "factions" of fans.