I am basing my answers on logic, and not on apparent "status" of the person I am talking to.
There is no hard logic to what you are proposing. If you or anyone else has any hard math on this, please provide it. We couldn't find any. And your answer only suggests that it "feels" secure to you, and you don't have any actual models of this. We can't base our secure service on a feel. But since you are being persistent, please do tell me, these are the outputs you see:
2
4
0.25
0.25
4
2
1
2
0.125
2
1
4
2
1
2
in one case
and
2.23454433
1.782252
3.3
1.362
1.6373342
0.8347223
1.2352
0.5243324
2.23
1.8729445434
2.356223
1.673
2.67
2.986363423
1.82786

And you know that a user has deposited 7.8 bitcoins.
Obviously you don't know the fee, it can be 0.03235 or 0.01342345, or 0.0284 or 0.152332 or whatever, it's random.
You don't either know how much of the rest of the amount the user withdraws.
Now please, do tell me which transactions go to this user using the last list and explain how that is less difficult than using the first list.
Or does anybody else see it?


It's a free country (we live in the Torland  ) and you are free to do what you want, but I officially endorse you as not knowing what you are talking about. During this duscussion you have had a number of points that I have discredited, and most of them you didn't even bother to answer. In the beginning you didn't seem to even have read up on what exactly our service does, and yet was making assumptions. You don't seem to have a grasp on what other services in the same category do either (they do much less than we do). On top of that, your last argument basically was "ah, you didn't agree with what I said before? I discredit your service!" without giving any actual arguments for what you are proposing.

To conclude, I understand your position, but it does not have any valid basis.