CS, in reply to two of your questions:
1. A worker does not have to DEMAND his wages in order for the employer to be over bal talin. It is enough if he asks to be paid.
2. Blatant lack of tznius is worse than many other aveiros for a number of reasons. Firstly, as I have written, it is machshil many men many times a day.
Secondly, as it is a public lack of tznius, it is befarhesia, and thus worse than an aveira done privately.
Thirdly, when a woman who knows the halachos decides to go out in public in a non-tznius manner, she is announcing that she doesn’t care about the halacha. Someone who, for example, speaks lashon hara because he is ‘attacked’ by his yetzer hara, has not planned on doing so. I would agree that if someone stands on a street corner and attempts to stop passersby and tell them lashon hara, he would be just as bad. But that is something that generally doesn’t happen.