Please consider revamping Galactic War entirely instead of tuning the random distribution algorithm. You guys (and gals?) seem to have a dedicated and talented team working on events, perhaps consider handing GW over to them as a major content block. They could craft preset themed campaigns that rotate each month, which allows the player access to new content and gives the developer the ability to fine tune the difficulty to an intended rather than random level.
For example, the Galactic War for August could be "A New Hope" with an Empire themed campaign, each day ending in a miniboss that changes on a weekly basis culminating in a raid like battle against the Emperor in week 4. This also gives the ability to show off new and upcoming characters in scheduled PvE content.
