To BlueDevil:
Thanks for the enthusiastic reply!
Some artwork can be previewed at the BoardGameGeek link above...
The Belgian addition to the game, with BD, is Thieffry's Ni23. But there is also a Roumenian Ni17 that if you just paint black the center of the roundels with a little felt pen...
To RichardWillis:
Thanks a lot! You did a great job with those minis. Thanks also for your opinion about altitude rules - I do not like so much to use them for dogfights (that's my totally personal taste - I played quite a lot of Blue Max and Ace of Aces without altitude and had fun with it anyway) while I think they really add something when balloons, AA guns and trench strafing are involved. That's why we included them in this new set.
Happy flights!
A.