and so what even if T1 takes 40 second.
I see your point, but if t1 took 40 secs, do you seriously believe anyone would build t1 as an opening build.
Ost could literally have an mg sitting outside your base in that time.
As to the point about At, well I think that allows other commanders other than guard commanders to be viable.
As to the homogenization of build speeds, i don't think they are too similar at all. Okw still builds from t0, and ost will still have units out faster as grens are substantially cheaper. In your own words I am simply tweaking to make balancing more achievable.