Hi Mal,
Just a suggestion. I don't know if everybody who is interested in a Hurri build would also like to plop in for a BoB build. This is b'cos not everybody would have any addnl sets like ground equipment/airfield sets/diorama expertise to complement the Hurri that they build.
As far as I can see, a BoB build as being envisaged by the ideas generated here are more to do with a diorama, and not an A/c build as such.
Like, if everybody said 'Yep, let's build a diorama around our plane corresponding to a scene from the BoB', then it becomes a diorama idea. On the other hand, if folks say 'I just wanna build a Hurri, I don't care what time it is in', then it would be a Hurri build.
So if you wanna build a diorama, IMHO, it belongs in the Diorama forum, and not as part of a A/c build. It's another thing if people make a Hurri for the build, and then at the last moment decide to plonk it down on an airfield. It can cut both ways

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Finally, after that long winded speech, my points are these:
1. Let's just go for a Hurri build for starters.
2. Any make, any theater, and era.
3. If you want, you can say either 1/72 or 1/48 or 1/32.
That way, we can stay focussed, and help others along the way. This was also the idea with which I kicked off the Luftwaffe build

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Cheers,
BP.