Well I hopefully will be able to let you know what I observed shortly.
I have three careers rolled up for J11, one in the spring of 1917, the next January 1918, and the final in the summer of 1918.
Now if I only had time to play all that I wanted I would be a happy man!
"WOFF UE: Time" should be the next expansion pack! If only I had more of it I'd get in more WOFF UE missions!
Boy I wish!
And olddog, FWIW my usual start is March 1917 for my "early" J11 career.
And yes you will see skins (from the HA) in 1917.
As Creaghorn mentioned the summer of 1918 was tough on J11.
A lot of the big names, often mentioned in the same breath as J11, were actually in JG1 proper and some written accounts tend to blend the units together when talking of the "big guns" and the "Richthofen Jasta."