Agree re shedding protection as a means of enhancing mobility - the other area in which weight savings could be made is in shucking a good amount of the technology we rely on, same weight directly through having less to carry and indirectly in reducing the log burden on supplying the batteries etc for these systems. BUT like shedding protection, the key would be in determining the balance where less actually stops being more and starts to be really less in terms of overall capability and effectiveness.

Caching doesn't so much reduce the log burden as shift it elsewhere - someone still has to plant the caches, periodically check and maintain them and also ensure that the pursued adversary runs to where caches are...