I really do not understand the purpose of the complaint.
What is your goal with completing every quest on the planet?
It is either to overlevel, min/max yourself in terms of 'available' planatary XP OR
You are questing for the sheer enjoyment you get out of it (A slight variation being the 'completionist', the guy that gets things done completely for it's own sake and satisfaction).
For the former, over leveling is your literal goal
For the later...your point is moot OP, you are questing because you want to quest (not because you want the XP).
Leave it alone Bioware, with the added benefit of Legacy XP boosts for specific content types this is a potentially critical change being suggested.
Of course, the addition of a no xp feature for anyone that wanted to use it, is relatively harmless and could be good times.