its not a matter of anyone's personal interest to recognise any of our big city with a perticular name...most of the local or even distant resident know Varanasi as Banaras...i respect them and even i use Banaras generally, but every body (at official places) know its Varanasi...similar in case of Vadodara/Baroda...Now come to the point...yeah Banglore is popular but at one time Madras was also equally popular..if you are asking my personal opinion, yes I want that world know Bangalore as Bengaluru in future and wikipedia is a very big platform where we should aside our emotions and use things as such..wikipedia is not only limited to some section of peoples its' open for all world. if anyone want to use Banglore then he should use it in parenthesis with denotion previously known as or something like this.