Following Alfhedil's scathing remarks and ragequit, I would suggest Kilo take this matter to heart and officially set an absolute technological limit not just overall but on each sub group....

I would divide as so:

Infantry technology:
Armour(Tanks) and vehicle technology:
Planes technology:
Airship technology:
Naval technology:
Industrial technology(Energy Generation):
Industrial technology(Means of Production):
Scientific (Medical):

And also we should outline limits to punk tech
Gyrocopters: YES/No
Tesla-Weapons: YES/No
Biopunk: Yes/No
HANDHELD GATLING GUNS: Yes/No
Steampunk Jetpacks: Yes/no
etc etc