In the hypothetical that WotC, at some point, releases a Kara-Tur product...that has received contributions and vetting from various cultural consultants from all cultures that inspired the works of Kara-Tur...it will, with a high degree of likelihood, still manage to offend. In which possible cultures and individuals that offence occurs is somewhat predictable in a general sense, but any work will inevitably "not sit well" with some in one form or another.
Therein lies a rather noteworthy conundrum. Would it simply be better to not even go there? Is it worth the risk? Is the goal to minimize the potential for offence, recognizing a product 100% certain not to offend is impossible?
The intent, no doubt, would be not to upset or offend a soul, especially so among those from cultures (or descended from cultures) that inspired the work....so if some are still upset and/or offended....is the intent suddenly meaningless? Is the message, at that point, to not even try anymore?
That really is one of the biggest concerns I possess as regards the debate. Will the risk of offending, no matter how strong the attempts are to avoid it, ultimately lead to stunting the imaginative and creative among us from even trying.
The debate continues, as it should...I just hope we don't lose something along the way.