WRT only doing " just those near current mission paths", I would extend that a little. There are of course many main 'target' cities which would look better with your work; and I mean daytime activities, such as BoB daytime targets. Southampton and Portsmouth were oftern attacked during the daytime. including by Stukas. Dunkirk?? Other than those, I'm sure others can think of more.
Talking of terraced houses, I note that many were red brick, but heavily coated or darkened by coal fire smoke pollution, so if you like more red, albeit darkened? I note you already have some of those...