An Engineered Solution Maybe?
A way of making it easier for pilots to judge clearances, especially at night time, would be to incorporate a coloured laser marker in the Nav light assembly. This could be a shielded coloured strobe, projecting the wingtip or tail relative position onto the taxiway. Pilots will then have an accurate indication as to where they are with reference to the taxiway markings.
Including these marker lights in the Nav light Assy will simplify retro fit, new build a/c could incorporate air/ground sensing, so they can be turned off in flight.