The world tier is the current maximum tier of technology unlocked in the game overall. Em-8ER will be regularly updated with new tiers and new blueprints that will increase the maximum world tier. World tiers must be achieved and maintained by players combining their efforts to achieve world goals. World goals are achievement states for the overall world and may include number of zones under player control, terraforming state of those zones, bases founded, and other common objectives.
World tier is not static, but can rise and fall as Tsi-Hu and their Kaiju fight to destroy bases and take back zones from players. If a world tier drops to a lower tier, players will not be able to craft or repair new gear or equipment above that tier. Players can increase the world tier up to the current maximum, by taking back territory invaded by the Tsi-Hu or rebuilding bases which had been destroyed by Kaiju.
World tier is not static, but can rise and fall as Tsi-Hu and their Kaiju fight to destroy bases and take back zones from players. If a world tier drops to a lower tier, players will not be able to craft or repair new gear or equipment above that tier. Players can increase the world tier up to the current maximum, by taking back territory invaded by the Tsi-Hu or rebuilding bases which had been destroyed by Kaiju.
For instance, suppose my starter frame is a tier 1 daschund. I then craft a T4 Greyhound. Given that base are CONSTANTLY under attack, it makes sense for me to always use the daschund since the world tier could drop at any moment and I would lose the ability to repair my greyhound. Andif that is the case, there is no point in CRAFTING the greyhound, and if THAT is the case, there is no motivation to increase the world tier.
I do not have a solution because it's 2 am and I haven't slepy, but I'm sure someone will think of something.