The thing with SWAT is, the maximum mission for them will only ever require 4 full SWAT vehicles. That’s not hard to count and plus, the SWAT Bearcat REQUIRES 6 personnel to operate. So, you are really not counting the personnel but the vehicle it’s self. I just can’t imagine counting out the amount of personnel needed for the mission say divided by 12. I know that a real wildfire can get up to 1,000+ personnel on scene so, I would like that function but it’s just not viable. If we put a 12 capacity operation on the Crew Carrier, that would be unrealistic. In real life we don’t always fill them and saying we send like 10 of them to a mission, Crew Carriers were never that popular anyways.
In reality though, the 1,000+ personnel fires are not that common as a percentage of total wildfires sparked each year. Maybe more often in CA and CO than the other western states, but in those states it is more common for structure to be threatened and it becomes about structure protection as opposed to just make sure it doesn't get out of control like a lot of fires in MT/WY/ID etc. It may be worth making the largest fires just take less personnel than in real life or just not having them in game. The fact that missions are points makes super large fire like the recent CA outbreak or the '18 CA fires not realistic for current game mechanics anyways.
I'd propose increasing the Crew Carrier to around 20 people as this is a fairly standard squad number based on my understanding (and this is what NWCG uses for its production hourly rates), and it is an easy number for math. Even if they aren't always filled in your experience, we need to find a way to simplify the idea if it is to be implement in the game, and I'm sure some crews do fill them or several of them (in fact, I know that, because the dorm I RAed for in my undergrad housed firefighters in the summer, and we did quite a bit of chatting during my time).
Quote from WinWin
The reason why that would not work is because we know people are going to use it to just upgrade fires and get more credits. All of them would make it so it’s the biggest it will get. And quite frankly some just may not have the resources so I don’t think I would want to be waiting for the mission to cancel because it got out of control.
I agree that the credits shouldn't increase because the player doesn't attack the fire. Perhaps a better way to do it would be to set it at the acreage, and not have it be expanded. Then the fires decrease in acreage with water, increase containment with personnel and dozers.
I know you say that the Crew Carrier wasn't popular anyways, but for amount that I have seen them in the summer in MT and WY for fighting fires, I'd say they are still used enough to justify having.