The way i see it, adding an infinite 'Johnny's locker' is the same thing as being handed a cheat code or hex editor.
Although it may be fun, you are basically declaring "I am bored with the RNG of this game and want experience the game in a permanently different way".
Although some players may think they are prepared for it, from my experience the thrill of getting everything at your fingertips never outweighs the disappointment of having the old way of plying the game ruined for you.
Basically, once you unlock pandora's box you can never go back.
EDIT: of course, I would use this feature in a heart beat, but that's because ive seen most of what this game can offer content-wise. The final frontier for me is playing around with crazy classes and beating stupidly hard dungeons (although i still don's succeed).
I've done my time, but i still want to milk what i can out of DD. it's that good a fundamental system that you don;t want the ride to end. it has the same mechanical addictiveness as the best-balanced FPS or puzzle game, where you don't need bells and whistles and storylines to make the game good; they are just curve-balls to keep players on their toes.