By Kirk Miller While everyone talks about legroom on planes — or the increasing lack thereof — there’s another personal space issue that needs addressing. We’re talking width. In a profile of the aviation interior consultancy LIFT Aero Design, which is working on a wider airplane-seating configuration concept called Paradym — CNN Travel asks a really important question: What if airplanes were wider? On the surface, wider planes (and we’re talking wider as in usable interior space) could mean better seating and more spacious aisles (and fewer passengers and flight attendants bumping my shoulder…