Remote deicing has been asked for by airlines, the answer has always been NO. To do with no suitable location with drainage.
When the snow threat level reaches a set level, the airport takes control of ALL handling agents that supply deicing and they put everybody in a queue based on your CTOT.
Why they don't vacate a/c off of contact stands that are awaiting deicing, causing a delay to the next a/c waiting for that stand is beyond me.
It seems there is no thought or common sense involved when the airport (allegedly) control the deicing of aircraft.
For instance today the CX216 STD 1130, left at 1300 and was still waiting to be deiced, it waited that long the snow had melted! It also waited for a TUI to be deiced before towing back onto stand, for an hour.