Actually, getting from lv27 to lv30 is already a little grind.
This feature is definitively a great add-on, for new players.
They wanna try the game, to see what it offers at high level (even if with some low equipment), Skip the Fun.
They understood and wanna play it the fun way, they.... well, i think it's not up yet, but well, they "retire" and loose all gold or/and equipment, becoming a true level1 ready to level up.
Not going to do it though, already have some alts with decent equipment and money, don't wanna do it all over again.