Because you are running the same areas, in the same order, over and over and over. It does not really matter that there are more areas in the profiles, or that it takes longer to run because it is always the same. You might as well be doing Sarkoth runs because it is exactly the same thing for exactly the same reasons. Even if there was an A and B set, that would really do nothing to make it less noticeable. Lets say you have a profile with 5 different areas 1 through 5 in it there are literally hundreds of different combinations to the order in which they are placed.
1,2,3,4,5
1,3,2,5,4
1,5,4,2,3
2,4,1,5,3
4,1,3,5,2
5,4,3,2,1
3,4,5,1,2
4,1,3,2,5
And so on...
Until a plugin is available that can truly randomize multiple areas within a given profile, there is great risk in running them.