"Needs" is such a specific word.
In terms of the fiction - no work ever "needs" a reboot/reimagining/remake.
In terms of commerce - I suppose a movie "needs" a remake when someone owning the rights thinks that such is required to keep interest in the property high enough to keep it in print/available or turning some defined level of profit.
Thus - it could be said that Star Trek rather needed the reboot - as a business, it wasn't doing what the owners wanted it to.
And also thus - Star Wars really doesn't need it. The original films have their fans. The prequels have their fans (believe it or not

). The animated stuff goes apace. There's no real sign that the thing is dying as a business, so no reboot is called for at this time.