I don't understand what is so difficult to understand: you walk in, a SA should greet you and assist you with looking at each item. You choose which item you want and the SA packages it to your preferences.
Meaning, SAs need to do their jobs and approach customers and assist them. Some SAs are fabulous, but I've met my fair share of SAs that didn't do their jobs. I just left the store.
Likewise, you have to expect that the store management will not be too happy with you if you are messing up their displays... It is rude and trashy behavior, imo. How often do we read posts from other LV loving neurotics that advise to never buy the floor model because it's not brand new? Well, the reason why the floor model is so beneath the stored stock is because everyone and her mother has put her hands' oils on the leather, etc. The behavior increases the chances of theft. And well, Louis Vuitton isn't the selling floor of a Macy's. If I wanted to dig around a pile of bags to help myself, I wouldn't be shopping at a designer boutique.
You have to expect that if you walk into the LV store, the staff will want to assist you and they will want to sell you something. It is their jobs to try and sell you something, even if you say you are browsing. I browse online to get an idea of prices, availability... I go into a store to buy.