Personally, I would have loved this. I miss those terms being used for the stronger versions of the spells, and as someone who's been a fan of final fantasy since VII, it would have been less confusing... but I think Moonleg is right, and I recall seeing a statement made by either Yoshi P or someone on the dev team a long while back that this was their train of thought; they were expecting players both new to Mmo's as well as to final fantasy games and wanted to keep things less confusing for them.