We use several modules within SW to monitor our environment, and a lot of our estate is on offshore drilling units which utilize high latency, low bandwidth VSAT connections (1mbit, ~700ms latency)
When pushing out agents over those slow links, its ~100-200 mb for the agent and associated plugins which each server needs to download individually as it is transferred over secure connection and cannot be optimized with WAN optimization.
I think an offline installer with the agent and all more importantly all of the plugins would be welcomed by those monitoring nodes over similar links and wish ti take advantage of the Agent given it is meant to reduce the amount of bandwidth it takes to send data back to the main Orion server.