Erasing that sort of thing by force is folly. If it changes, it should evolve naturally, either by LS clans banning the attacking of Seanchan by unclanned, or a variety of other ways other than crying 'your rp sucks, change it!'. After all, the Borderguards have proven it's possible.
You say it should evolve naturally. However, you then put the onus for that change only on the LS. How is an unclanned character supposed to use in game RP to naturally change this through RP when they're immediately attacked on sight? I agree that it should change through natural evolution. However, it takes BOTH sides being willing in order for that to happen. I am gald that it's been admitted, however, that this decision is not grounded in RP. Earlier, I said that if this is an opinion regarding gameplay or PK, I just wish people would admit it. Don't try to insult my intelligence by making RP excuses for it.
So, your opinion is that it's not grounded in RP for SS to attacked unclanned people on site, but it's important for Immortals to let it play out the old way rather than force change. I disagree, so we'll just have to agree to disagree in this.