I recall landing at SIN years ago: "Welcome to Singapore. Follow the greens to your stand." Fantastic.
Although it's not obvious to the casual observer, taxying around a large and complex airport is one of the more challenging things we do, especially if it's not your home base. Anything that makes it easier and safer should remain.
It will be a brave person at BAA who in this day and age takes a step that so obviously downgrades safety. At the subsequent board of enquiry etc etc...
Keep it.