can we get something to improve the effectiveness of structures without having to outright replace them with the better version (though these upgrades can be applied to the higher level structures as well), there could be a general durability upgrade for all structures, energy production boost and transfer range increase for the generators, a sort of "thorns" upgrade for the barricades, energy efficiency upgrades for the miners and defence turrets, range and damage upgrades for the turrets, etc.
also can we get a repair pulsar thingy which repairs things for us?