I have finally enabled the Builder and Armory Queue Tabs for the Boom Beach Tracker. This is a premium feature that I provide to all users who have made a minimum $10CAD donation. The Queue tabs show a list of all available upgrades at your current Headquarters level. The upgrades are sorted by the “experience ratio” which is just the experience gained divided by the time to complete the upgrade. This should give you an indication of which upgrades give you the most experience over the shortest time, so you can get that Headquarters upgraded sooner.