It's difficult to believe that some would even consider taxing to a gate. You've just declared an emergency for Eg the RFF are at the ready for yr arrival, ATC have all but stopped everyone where they stand as the Airport is now on emergency alert, you land & then say oh we wanna taxi to gate xx as we 'think' the fire is no longer a problem.
ATC would be out of their minds to let a well laden A/C that has just declared an emergency to wander off into a busy ramp which I might add may not be available as you where not expected anyway. Just totally way off the mark to even consider such an action. Stay away from other planes evac as the A/C is designed to cater for such an event, the crew are trained, the RFF are very well trained & you have every right as a commander to make such a decision.
Just not gunna happen, well by any responsible commander that is.
Wmk2