Count me as one of those who wants to beg you to never change your open seating. It is why SWA is our first choice whenever possible- recent "assigned seating" experiences on US Air and Delta, among others have reinforced that feeling.
Only on SWA do I have the option of avoiding people who look to me like unpleasant choices- my US Air flight was spent sitting next to a toddler having a tantrum and throwing toys that would miss her mother and hit me. I don't know that I think anyone should be subjected to that- but I know I didn't like having no choice - and having the attendant say- sorry - you're assigned there - we have nowhere to move you.
I am so looking forward to my SWA flight next month- please don't fall into the trap of fixing something that is certainly not broken in my opinion.
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