Well, you need to carry a bigger assortment of troops and materiel, you'll need a bigger vehicle. An LAMV can not replace a lorry, after all.MRAPs are overkill- these things aren’t being targeted by 30KG IEDs like in Afghanistan, at most all they get are small arms and grenades. Almost any level of armouring would protect the occupants from this- Marksman, LAMV, LSV, rakshak etc etc etc all are more than up to the job forget about all the armoured trucks and busses produced since Pulwama