That's a good suggestion and I'll look to our team about implementation.
In the meantime, you could have a BCU with Radio Equipment (which would act as an MCV) for rural locations.
I would love to the the rescue trailers be able to attach equipment, to with the small being 20 and large being 40, could also finish it up with a utility trailer that has 10 but doesn't have the heavy rescue support to do a MCV trailer like suggested. I fell like it would be easier and more beneficial to do that than add all the different trailers people want