I am sure there are many things in the colony management set of screens for GC2 where we can see improvements we would have liked. Since we have not yet seen what GC3 will have in colony management, it is difficult to make suggestions. So, on the off chance that there are some ideas out there that may fit in with the current plans:
In the GC2 colony management main screen on the right side the list of available projects was listed. this list had three filters, "New", "Old", and "all". A fourth option would have been very useful: "Upgradable", which would have shown which older buildings you had built that now had newer variants.