Zac
You're not the only one to suggest a full detachment of these things, rather than penny-packeting them out to separate detachments as individual extra vehicles.
Another suggestion I had discussed was a separate 'Troop', as in half a detachment led by a sarge in a command vehicle:
4 vehicles for Elites – with a command vehicle plus a single ARV, single CEV and single Ambulance
5 for Veterans – with a command vehicle plus a two ARV's, single CEV and single Ambulance
8 for Trained – with a command vehicle plus a two ARV's, two CEVs two Ambulances and a comms jeep or similar from the regular list
15 for Untrained – with a command vehicle and command support vehicle (ie another command vehicle: cheap, low tech equipment is big!), plus a four ARV's, three CEVs four Ambulances and two comms jeeps (or similar) from the regular list.
Anyway, I'm planning a test in the next couple of weeks but – anyone else who tries any of this – please do tell me how you get on.
John T