Change for changes sake or will it be an improvement on what we have now?. I rather doubt it, the taxiway system seems to work very well, it's very rare to hear even infrequent visitors get lost. I know ICAO keep banging on about it not being a standard system but perhaps they should look at the system they dreamt up and change that.
As to the stand changes it seems ironic that everywhere else in aviation we are told we must use alpanumerics (flight numbers, taxiways etc.) and yet here we are changing to just numbers for stands. Very silly, it aint broke, don't fix it.
At the end of the day the ONLY people in concerns are pilots, ATCO's and the emergency services. Has anyone in those groups been asked if they want or need a change?. As usual, I suspect the answer is no.