In DCS WW2, I'd like to see a LA7, Yak3.. and other a/c dated at the same time as the P51D and Dora.
I see no reason to stay in the west, and it'll add an extended dimension to eastern europe for the WW2 era.
In IL2, in a FW I always found the Yak's and LAs more of a challenge compared to the P51Ds... this will definitely be a great addition.
As for modelling data, any WW2 data is a 'challenge'.
:-)