Of course you fail to see, because you're still not understanding that the legacy IS the surname and vis versa, and it's associated in a way that gives meaning to the surname. A surname without a legacy is boring, it's been done before, and a legacy without a reference to whom does this legacy belong to, some guy on a server that shall not be named, or an actual family. "The Skywalker Legacy" sounds a lot better than "The Same Nameless Legacy As Everyone Else" there's no point of reference. If you had your way, everyone would share the same generic legacy.
What a cop out response, all lies. We all know you'd be on here whining about that too if it were the case.
I can't imagine the legacy being separated from the surnames for the same reason.
No one is forcing you to display this legacy name for all your characters, therefore it is you that is "bad for RP" for 1. chosing a name you don't like 2. choosing to display it over all your characters. This is not something BioWare can fix because people like you will always find a way to make it "bad for RP" when in reality it's an extra feature that can be enabled/disabled at any time with the touch of a button within the UI.
Not true. I do have an alt that I plan on leveling later, but you see I actually like my legacy name and took that into consideration when creating the character. This is what RP is all about. You clearly made a decision you don't like and would like BW to reverse that, which is cool, everyone deserves a second chance, but dismantling the legacy system is out of the question. You already have individual characters with unique names and stats, that's not the purpose of the legacy system which you seem to not understand.