BTW, the Lewis gun on the Brisfit is -not- an ahistoric feature.
Though it wasn't a standard fitting, some aircraft were fitted with a Lewis on the top
wing in a similar fitting to the one on the S.E.5a.
If you live near London in the UK, the Hendon RAF Museum's Brisfit has a Lewis gun on the top wing.

The SPAD VII's Lewis is another matter, though.. not to mention the bizarre Nieuport triplane (I know it did exist, but still, a late-mark biplane Nieuport would have been a more worthwhile addition.. particularly as the Allies already have a triplane in the form of the Sopwith)