Currently in ps4 NA scourge there's a blue guild that comes on around midnight pacific every night and Zergs the map. The pick up groups I've joined call the, the idiot guild, but I don't think that's their official name. Because it's the middle of the night, in an hour they wipe out the entire day's progress for red/gold. They hold the keeps all night and into the next day, so their points add up and result in a large margin.
This isn't a new strategy. The month campaigns are always an instant win for guilds who can get a few dozen late-nighters. There are a few fixes I might propose:
1. Scoring starts to fluctuate as a function of total server population. A keep might be worth 10 points if 1200 players are in, but 1 point if it's under 100. This would reward actions during prime time, amd should be a somewhat easy programming so,union.
2. Keeps and NPCs become progressively stronger the lower the server population.
3. For longer term solutions, we really need ZOS to rethink keep capture and defense. Forward camps allow the aggressors to bring unlimited players into a combat zone...we should be able to get players into defensive position easier. Keeps are too easy to take.