What to do when there's so much time in between patches...

I've been farming for glams mostly lately due to upcoming changes in 7.4

On the usual? not a lot really.

Just keep paying sub so your house isn't demolished

You can do:
Extreme Trials
Savage
Ultimate
Solo PotD/HoH/Eureka Orthos/Pilgrim's Traverse
Collect Relic Weapons
Variant/Criterion Dungeons
Ranked Crystalline Conflict
DoH/DoL Relics