Yep buying 20-30 odd new KAAV-7's for "A" Squadron - 3/4 Cav Regt in support of 2RAR would be a tremendously excellent idea, would cost about the same as 1 operational EA-18G Growler and would directly align with our increasingly strategic littoral operations doctrine, being as useful in Humanitarian and Peacekeeping operations as it would in combat operations.
Such a purchase would also alleviate single points of failure such as the handful of LCM-1E's we are buying, the point of failure being - they get sunk if someone decides to shoot something as heavy or heavier than an RPG at them and our lack of capability to currently provide any sort of protection to any fires that may rain down upon our precious cargo, whilst they are maneuvering to shore...
Pity it isn't going to happen.