A couple of things I noticed.
First off, territories and countries:
-Germany needs to lose Qingdao, Pacific islands, East Prussia (to Poland)...
-Austria-Hungary should (I believe...not sure though) be broken up by now.
-Soviet Union, Saudi Arabia, Turkey, etc. need to form (I don't know if they do through events).
OOBs:
-Germany should be disarmed.
-It seems the 1914 OOBs are used, so they should be updated.
-White Russia has no army or navy.
Other Stuff:
-Ukraine should be a puppet of Germany or Austria, and the intervention needs to be planned.
-The Revolutionary Insurrectionary Army (Makhnovshchina) should be represented in the Ukraine (the events have a West Ukraine on the site...hmm).
-According to the site, there is no Intervention in the Russian Revolution (other than the Ukraine and Japan). Historically, there was.
I don't know how much of this is done or being worked on.
It is a great mod.