I would love to see a system where the rural fire trucks had fire blankets to put on the windows in wildfire situations ,its purely for immersion as it has no purpose but for a roleplay server it would be a good addition. Also water sprinklers could be used to be in full overrun procedure.
The blankets are seen in the top of the cab and can be rolled down in the event of a burnover where the flames overrun the appliance, sprinklers are around the bed of the truck and the arches to make sure major components such as tyres don't catch on fire.
The Country Fire Authority has made a video demonstration of what it looks like:
A mod that could be used as a template:
https://www.lcpdfr.com/downloads/gta5mods/vehiclestextures/21835-western-australia-isuzu-rural-tanker-skins/