It sounds as though the aircraft was designed solely with the navy in mind with no thought for what the army needs. It is an exact re-run of the 70's.
Err, isn't that why the IPT has a Brown Job for BRH Requirements Manager, or am I missing something.
Perhaps he put Key User Requirement 1 as "Must be able to dig a trench and brew up in all weathers"?
I believe that the aircraft is as common across the BRH & SCMR as possible to reduce the support/training costs. Obviously at times, there will be compromise.